The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21810-1 advisory.

    - CVE-2026-65182: Bypass longest prefix security constraint (bsc#1276893).
    - CVE-2026-65183: TOCTOU when setting specific permissions for Unix Domain Sockets (bsc#1276894).
    - CVE-2026-65637: HTTP/2 no-authority bypass of strict SNI validation - fix incomplete (bsc#1276895).
    - CVE-2026-65905: Limited replay attack possible with DIGEST authentication (bsc#1276896).
    - CVE-2026-65927: RewriteValve [N] restarts at the second rule and may bypass access control     (bsc#1276897).
    - CVE-2026-66299: memory exhaustion via maliciously slow clients due to the WebSocket chat example     providing an       unbounded buffer for undelivered messages (bsc#1273150).
    - CVE-2026-66422: Servlet role references can bypass declarative role constraints (bsc#1276898).
    - CVE-2026-68525: Redirect after FORM auth may bypass method specific constraints (bsc#1276899).
    - CVE-2026-68569: Principal lookup can fail open in some cases (bsc#1276900).
    - CVE-2026-68763: DoS via allocation leak in HTTP/2 backlog tracking when a stream is reset       (bsc#1276901).
    - CVE-2026-73180: Authenticated WebSocket session survives end of HTTP session (bsc#1276902).

    Changes for tomcat10:

    - Update to Tomcat 10.1.59
     * Catalina      + Fix: Ensure that a login-config conflict when merging web.xml fragments      triggers a deployment failure. (markt)      + Code: Remove unnecessary calls to String.intern() in the parsing of      configuration files. (markt)      + Fix: Extend sessionAttributeValueClassNameFilter to include filtering of      dynamic proxy interface classes. (markt)      + Fix: Attempt to use rollback when persisting user data to the      DataSourceUserDatabase fails and improve error reporting. (remm)      + Fix: 70143: Handle InvalidFileNameException when parsing parts to      rethrow it as an IllegalStateException as mandated by the Servlet      specification. (remm)      + Fix: Add missing reason to the JsonErrorReportValve. (remm)      + Fix: evaluation of the N and C flags for rewrite rules. (remm)      + Fix: qsd flag should always discard the original query string when      rewriting. (remm)      + Fix: Add appropriate escaping for context path, current directory name      and parent directory name for directory listings produced by the default      servlet. Ensure XML escaping is used with XML output. (markt)      + Fix: When processing certificate subject names and issuer names within      RewriteValve rules, always use the RFC 2253 format name. (markt)      + Fix: the incorrect rejection of requests using digest authentication      when the client provided nonce count is at the upper boundary of the      window (markt).
     + Update: Separate the Context role mapping from the Servlet specification      security-role-ref. (remm)      + Fix: Handle the case where the JNDIRealm is configured to perform role      searches with userRoleAttribute but the attribute is not available or      not configured for the current user. (markt)      + Fix: Improve handling of session attribute addition concurrent with      session expiration. An application will now either see a successful      addition followed by expiration or the addition will not succeed. It is      no longer possible for the session to expire and the addition to      succeed. This is of particular not for attributes that implement      HttpSessionBindingListener. (markt)      + Fix: Add a new attribute to the Context,      urlPatternsProvidedInDecodedForm. This attribute controls whether URLs      and URL patterns provided in the deployment descriptor (web.xml),      annotations and/or their programmatic equivalents are treated as being      provided in URL-encoded form (i.e. using %nn encoding) or in decoded      form. The Servlet specification requires that they are provided in      decoded form. However, Tomcat has historically treated them as if they      are provided in encoded form. In Tomcat 12, they will always be treated      as if they are provided in decoded form. This setting enables migration      from encoded form to decoded form on an application by application      basis. This attribute will be removed in Tomcat 12 where it will      effectively be hard-coded to true. (markt)      + Fix: Ensure the security constraint with the longest matching path is      selected when more than one constraint matches the request path. (markt)      + Fix: If the request saved by FORM authentication uses a method other      than GET, ensure that the security constraints are re-assessed after the      saved request is restored and before it is processed. Custom      Authenticator implementations that extend FormAuthenticator and override      doAuthenticate() and/or restoreRequest() will require modification.
     (markt)      + Fix: Various improvements to the DataSourceRealm. A failure to connect      to the database or an exception during either user or role lookup will      now result in an authentication failure rather than a partially      populated Principal. For CLIENT-CERT and SPNEGO authentication, the user      must exist in the database for authentication to succeed. (markt)      + Fix: Improve the handling of AsyncContext.dispatch() when the Context      attribute dispatchersUseEncodedPaths is set to false since the      application has no control over the path used for the      AsyncContext.dispatch(). Prior to this fix, paths containing literal '?'      characters were truncated. (markt)      + Fix: Ensure that capture groups from a RewriteCond always reflect the      result of the current request. (markt)      + Fix: async path building. (markt)
     * Coyote      + Update: Add utility AutoCloseable URLConnection wrapper, and use it to      cleanup existing code patterns. (remm/markt)      + Fix: When processing an HTTP upgrade from HTTP/1.1 to HTTP/2, ensure      that all the HTTP/1.1 data has been processed before switching      protocols. (markt)      + Fix: Require every HTTP/2 request to provide an authority (either an      :authority pseudo header or a Host header). (markt)      + Fix: Register the use of an HTTP/2 stream identifier earlier so that      there is no possibility of a re-used stream identifier being accepted,      regardless of how early in the HEADERS frame processing an error is      detected. (markt)      + Add: new attributes (unixDomainSocketParentPermissions and      unixDomainSocketParentOwner) to the NIO connector to provide additional      control over the security of Unix Domain Sockets. Additional checks      (enabled by default) have also been added for the directory where the      Unix Domain Socket will be created.(markt)      + Fix: an allocation leak in the HTTP/2 backlog tracking when a stream is      reset. (markt)      + Fix: parsing of client certificates that specify more than one OCSP      responder for configurations that use OpenSSL-FFM. (markt)
     * Jasper      + Fix: Ensure internal state is reset before re-using ELParser. (markt)
     * WebSocket      + Add: a limit (defaults to 8KB) on the size of the HTTP response headers      accepted during a WebSocket HTTP upgrade. This is configured via the      org.apache.tomcat.websocket.MAX_HTTP_RESPONSE_HEADER_BYTES user      property. (markt)      + Fix: Improve URI template matching for WebSocket end points. Trailing      slashes are now significant both for template definitions and URIs      considered for potential matches to those URIs. Note that this means if      a URI template ends in a variable without a trailing slash, that      variable might be expanded to the empty string. (markt)      + Fix: Account for session ID changes when tracking WebSocket connections      for closure because they were created under an authenticated HTTP      session that has since ended. (markt)
     * Web applications      + Fix: Documentation: Better sample httpd configuration for use with      SSLValve and add a note that the exact configuration required will      depend on the overall httpd configuration. (markt)      + Fix: Examples: Limit the buffering of messages in the WebSocket chat      example to prevent a malicious client triggering excessive memory usage      that could lead to a DoS. (markt)      + Fix: Documentation: Expand the description of the %S (session ID) access      log pattern token. (markt)      + Fix: Manager: Use reflection to load clustering classes in      sessionsList.jsp so the sessions list page renders correctly when      clustering JARs are not present. (csutherl)
     * Other      + Update: Maven Resolver Ant Tasks to 1.6.1. (rjung)      + Update: Objenesis to 3.6. (markt)      + Update: JSign to 7.5. (markt)      + Update: Bouncy Castle to 1.85. (markt)      + Add: Improvements to French translations. (remm)      + Add: Improvements to Japanese translations provided by tak7iji. (markt)
     * Cluster      + Add: Change the default encryptionAlgorithm for the EncryptInterceptor      to AES/GCM/NoPadding. This is a breaking change for the      EncryptInterceptor. (markt)      + Add: Expand the documentation for the EncryptInterceptor to be more      explicit regarding the security weaknesses of some supported algorithms.
     Also explicitly state that the replay protection is only effective for      non-malleable algorithms. (markt)      + Add: Expand the Javadoc for the DNSMembershipProvider in particular      explaining its behaviour and providing configuration advice if control      more over cluster membership is required. (markt)
     * jdbc-pool      + Fix: 70164: Correct the documentation for the testOnBorrow attribute.
     Pull request #1033 provided by Kohei Tamura. (markt)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21823-1 advisory.

    - CVE-2026-65182: Bypass longest prefix security constraint (bsc#1276893).
    - CVE-2026-65183: TOCTOU when setting specific permissions for Unix Domain Sockets (bsc#1276894).
    - CVE-2026-65637: HTTP/2 no-authority bypass of strict SNI validation - fix incomplete (bsc#1276895).
    - CVE-2026-65905: Limited replay attack possible with DIGEST authentication (bsc#1276896).
    - CVE-2026-65927: RewriteValve [N] restarts at the second rule and may bypass access control     (bsc#1276897).
    - CVE-2026-66299: memory exhaustion via maliciously slow clients due to the WebSocket chat example     providing an       unbounded buffer for undelivered messages (bsc#1273150).
    - CVE-2026-66422: Servlet role references can bypass declarative role constraints (bsc#1276898).
    - CVE-2026-68525: Redirect after FORM auth may bypass method specific constraints (bsc#1276899).
    - CVE-2026-68569: Principal lookup can fail open in some cases (bsc#1276900).
    - CVE-2026-68763: DoS via allocation leak in HTTP/2 backlog tracking when a stream is reset (bsc#1276901).
    - CVE-2026-73180: Authenticated WebSocket session survives end of HTTP session (bsc#1276902).

    Changes for tomcat:

    - Update to Tomcat 9.0.121
     * Catalina      + Fix: Ensure that a login-config conflict when merging web.xml fragments      triggers a deployment failure. (markt)      + Code: Remove unnecessary calls to String.intern() in the parsing of      configuration files. (markt)      + Fix: Extend sessionAttributeValueClassNameFilter to include filtering of      dynamic proxy interface classes. (markt)      + Fix: Attempt to use rollback when persisting user data to the      DataSourceUserDatabase fails and improve error reporting. (remm)      + Fix: 70143: Handle InvalidFileNameException when parsing parts to      rethrow it as an IllegalStateException as mandated by the Servlet      specification. (remm)      + Fix: Add missing reason to the JsonErrorReportValve. (remm)      + Fix: evaluation of the N and C flags for rewrite rules. (remm)      + Fix: qsd flag should always discard the original query string when      rewriting. (remm)      + Fix: Add appropriate escaping for context path, current directory name      and parent directory name for directory listings produced by the default      servlet. Ensure XML escaping is used with XML output. (markt)      + Fix: When processing certificate subject names and issuer names within      RewriteValve rules, always use the RFC 2253 format name. (markt)      + Fix: the incorrect rejection of requests using digest authentication      when the client provided nonce count is at the upper boundary of the      window (markt).
     + Update: Separate the Context role mapping from the Servlet specification      security-role-ref. (remm)      + Fix: Handle the case where the JNDIRealm is configured to perform role      searches with userRoleAttribute but the attribute is not available or      not configured for the current user. (markt)      + Fix: Improve handling of session attribute addition concurrent with      session expiration. An application will now either see a successful      addition followed by expiration or the addition will not succeed. It is      no longer possible for the session to expire and the addition to      succeed. This is of particular not for attributes that implement      HttpSessionBindingListener. (markt)      + Fix: Add a new attribute to the Context,      urlPatternsProvidedInDecodedForm. This attribute controls whether URLs      and URL patterns provided in the deployment descriptor (web.xml),      annotations and/or their programmatic equivalents are treated as being      provided in URL-encoded form (i.e. using %nn encoding) or in decoded      form. The Servlet specification requires that they are provided in      decoded form. However, Tomcat has historically treated them as if they      are provided in encoded form. In Tomcat 12, they will always be treated      as if they are provided in decoded form. This setting enables migration      from encoded form to decoded form on an application by application      basis. This attribute will be removed in Tomcat 12 where it will      effectively be hard-coded to true. (markt)      + Fix: Ensure the security constraint with the longest matching path is      selected when more than one constraint matches the request path. (markt)      + Fix: If the request saved by FORM authentication uses a method other      than GET, ensure that the security constraints are re-assessed after the      saved request is restored and before it is processed. Custom      Authenticator implementations that extend FormAuthenticator and override      doAuthenticate() and/or restoreRequest() will require modification.
     (markt)      + Fix: Various improvements to the DataSourceRealm. A failure to connect      to the database or an exception during either user or role lookup will      now result in an authentication failure rather than a partially      populated Principal. For CLIENT-CERT and SPNEGO authentication, the user      must exist in the database for authentication to succeed. (markt)
     * Coyote      + Update: Add utility AutoCloseable URLConnection wrapper, and use it to      cleanup existing code patterns. (remm/markt)      + Fix: When processing an HTTP upgrade from HTTP/1.1 to HTTP/2, ensure      that all the HTTP/1.1 data has been processed before switching      protocols. (markt)      + Fix: Require every HTTP/2 request to provide an authority (either an      :authority pseudo header or a Host header). (markt)      + Fix: Register the use of an HTTP/2 stream identifier earlier so that      there is no possibility of a re-used stream identifier being accepted,      regardless of how early in the HEADERS frame processing an error is      detected. (markt)      + Add: new attributes (unixDomainSocketParentPermissions and      unixDomainSocketParentOwner) to the NIO connector to provide additional      control over the security of Unix Domain Sockets. Additional checks      (enabled by default) have also been added for the directory where the      Unix Domain Socket will be created.(markt)      + Fix: an allocation leak in the HTTP/2 backlog tracking when a stream is      reset. (markt)
     * Jasper      + Fix: Ensure internal state is reset before re-using ELParser. (markt)
     * WebSocket      + Add: a limit (defaults to 8KB) on the size of the HTTP response headers      accepted during a WebSocket HTTP upgrade. This is configured via the      org.apache.tomcat.websocket.MAX_HTTP_RESPONSE_HEADER_BYTES user      property. (markt)      + Fix: Improve URI template matching for WebSocket end points. Trailing      slashes are now significant both for template definitions and URIs      considered for potential matches to those URIs. Note that this means if      a URI template ends in a variable without a trailing slash, that      variable might be expanded to the empty string. (markt)      + Fix: Account for session ID changes when tracking WebSocket connections      for closure because they were created under an authenticated HTTP      session that has since ended. (markt)
     * Web applications      + Fix: Documentation: Better sample httpd configuration for use with      SSLValve and add a note that the exact configuration required will      depend on the overall httpd configuration. (markt)      + Fix: Examples: Limit the buffering of messages in the WebSocket chat      example to prevent a malicious client triggering excessive memory usage      that could lead to a DoS. (markt)      + Fix: Documentation: Expand the description of the %S (session ID) access      log pattern token. (markt)      + Fix: Manager: Use reflection to load clustering classes in      sessionsList.jsp so the sessions list page renders correctly when      clustering JARs are not present. (csutherl)
     * Other      + Update: Maven Resolver Ant Tasks to 1.6.1. (rjung)      + Update: Objenesis to 3.6. (markt)      + Update: JSign to 7.5. (markt)      + Update: Bouncy Castle to 1.85. (markt)      + Add: Improvements to French translations. (remm)      + Add: Improvements to Japanese translations provided by tak7iji. (markt)
     * Cluster      + Add: Change the default encryptionAlgorithm for the EncryptInterceptor      to AES/GCM/NoPadding. This is a breaking change for the      EncryptInterceptor. (markt)      + Add: Expand the documentation for the EncryptInterceptor to be more      explicit regarding the security weaknesses of some supported algorithms.
     Also explicitly state that the replay protection is only effective for      non-malleable algorithms. (markt)      + Add: Expand the Javadoc for the DNSMembershipProvider in particular      explaining its behaviour and providing configuration advice if control      more over cluster membership is required. (markt)
     * jdbc-pool      + Fix: 70164: Correct the documentation for the testOnBorrow attribute.
     Pull request #1033 provided by Kohei Tamura. (markt)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of tomcat installed on the remote host is prior to 9.0.121-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2TOMCAT9-2026-028 advisory.

    Uncontrolled Resource Consumption vulnerability in Apache Tomcat's WebSocket chat example.

    This issue affects Apache Tomcat: from 11.0.0-M20 through 11.0.24, from 10.1.24 through 10.1.57, from     9.0.89 through 9.0.120. Users who have followed the security guidance to remove the examples web     application are not affected by this issue.

    Users are recommended to remove the examples web application or to upgrade to version 11.0.25, 10.1.58 or     9.0.121 (when released), which fix the issue. (CVE-2026-66299)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4203-1 advisory.

    - CVE-2026-65182: Apache Tomcat: Bypass longest prefix security constraint (bsc#1276893).
    - CVE-2026-65183: Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets     (bsc#1276894).
    - CVE-2026-65637: Apache Tomcat: HTTP/2 no-authority bypass of strict SNI validation - fix incomplete     (bsc#1276895).
    - CVE-2026-65905: Apache Tomcat: Limited replay attack possible with DIGEST authentication (bsc#1276896).
    - CVE-2026-65927: Apache Tomcat: RewriteValve [N] restarts at the second rule and may bypass access     control       (bsc#1276897).
    - CVE-2026-66299: memory exhaustion via maliciously slow clients due to the WebSocket chat example     providing an       unbounded buffer for undelivered messages (bsc#1273150).
    - CVE-2026-66422: Apache Tomcat: Servlet role references can bypass declarative role constraints     (bsc#1276898).
    - CVE-2026-68525: Apache Tomcat: Redirect after FORM auth may bypass method specific constraints     (bsc#1276899).
    - CVE-2026-68569: Apache Tomcat: Principal lookup can fail open in some cases (bsc#1276900).
    - CVE-2026-68763: Apache Tomcat: DoS via allocation leak in HTTP/2 backlog tracking when a stream is reset       (bsc#1276901).
    - CVE-2026-73180: Apache Tomcat: Authenticated WebSocket session survives end of HTTP session     (bsc#1276902).

    Changes for tomcat:

    - Updated to version 9.0.121

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Tomcat installed on the remote host is prior to 9.0.121. It is, therefore, affected by multiple vulnerabilities as referenced in the fixed_in_apache_tomcat_9.0.121_security-9 advisory.

  - Uncontrolled Resource Consumption vulnerability in Apache Tomcat's WebSocket chat example. This issue     affects Apache Tomcat: from 11.0.0-M20 through 11.0.24, from 10.1.24 through 10.1.57, from 9.0.89 through     9.0.120. Users who have followed the security guidance to remove the examples web application are not     affected by this issue. Users are recommended to remove the examples web application or to upgrade to     version 11.0.25, 10.1.58 or 9.0.121 (when released), which fix the issue. (CVE-2026-66299)

  - Insufficient Session Expiration vulnerability in Apache Tomcat meant that if the session ID for an     authenticated HTTP session was changed after a WebSocket connection had been established under that     authenticated HTTP session, the WebSokcet session would not be closed as required by the Jakarta WebSocket     specification when the HTTP session ended. This issue affects Apache Tomcat: from 11.0.0-M1 through     11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120. The following versions were EOL at     the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.43 through     7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version     11.0.25, 10.1.58 or 9.0.121, which fix the issue. (CVE-2026-73180)

  - Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2     backlog tracking when a stream is reset This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24,     from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120. The following versions were EOL at the time     the CVE was created but are known to be affected: from 8.5.59 through 8.5.100. Other unsupported versions     may also be affected. Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix     the issue. (CVE-2026-68763)

  - Improper Authentication vulnerability in Apache Tomcat meant that in some circumstances (e.g. CLIENT-CERT,     SPNEGO) that a user would be authenticated even if the user did not exist in the DataSourceRealm. This     issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1     through 9.0.120. The following versions were EOL at the time the CVE was created but are known to be     affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be     affected. Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
    (CVE-2026-68569)

  - Incorrect Authorization vulnerability in Apache Tomcat's FORM authentication process allows the bypassing     of a security constraint that limits user has access to a resource POST but not GET. This issue affects     Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through     9.0.120. The following versions were EOL at the time the CVE was created but are known to be affected:
    from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected.
    Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fixes the issue.
    (CVE-2026-68525)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Uncontrolled Resource Consumption vulnerability in Apache Tomcat's WebSocket chat example. This issue     affects Apache Tomcat: from 11.0.0-M20 through 11.0.24, from 10.1.24 through 10.1.57, from 9.0.89 through     9.0.120. Users who have followed the security guidance to remove the examples web application are not     affected by this issue. Users are recommended to remove the examples web application or to upgrade to     version 11.0.25, 10.1.58 or 9.0.121 (when released), which fix the issue. (CVE-2026-66299)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Published	Updated	Severity
344681	openSUSE 16: tomcat10 / tomcat10-admin-webapps / tomcat10-el-5_0-api / etc (openSUSE-SU-2026:21810-1)	Nessus	SuSE Local Security Checks	9/11/2026	9/11/2026	medium
344996	openSUSE 16: tomcat / tomcat-admin-webapps / tomcat-el-3_0-api / tomcat-embed / etc (openSUSE-SU-2026:21823-1)	Nessus	SuSE Local Security Checks	9/12/2026	9/12/2026	medium
341910	Amazon Linux 2 : tomcat, --advisory ALAS2TOMCAT9-2026-028 (ALASTOMCAT9-2026-028)	Nessus	Amazon Linux Local Security Checks	8/31/2026	8/31/2026	medium
346796	SUSE SLES15: tomcat / tomcat-admin-webapps / tomcat-el-3_0-api / etc (SUSE-SU-2026:4203-1)	Nessus	SuSE Local Security Checks	9/17/2026	9/17/2026	medium
330442	Apache Tomcat 9.0.0.M1 < 9.0.121 multiple vulnerabilities	Nessus	Web Servers	7/28/2026	8/31/2026	medium
330598	Linux Distros Unpatched Vulnerability : CVE-2026-66299	Nessus	Misc.	7/29/2026	11/9/2026	medium

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