Apache 2.4.x < 2.4.69 Multiple Vulnerabilities

critical Web App Scanning Plugin ID 115643

Synopsis

Description

According to its banner, the version of Apache httpd installed on the remote host is prior to 2.4.69. It is, therefore, affected by multiple vulnerabilities:

- A deployment of wrong handler vulnerability allows the target of some internal redirects from CGI programs to also be treated as CGI and executed, if the target is in a CGI-enabled directory and has no other extension understood by mod_mime. (CVE-2026-42356)

- A memory calculation bug in mod_dav allows an attacker with permission to create WebDAV locks to crash server child processes. (CVE-2026-42528)

- A NULL pointer dereference vulnerability in mod_heartmonitor over the unicast listener allows a denial of service. (CVE-2026-46729)

- An information exposure vulnerability in mod_session_cookie may pass the session cookie to a backend server when SessionCookieRemove changes across internal redirects. (CVE-2026-47360)

- Missing authentication checks in mod_auth_digest allow an unauthenticated remote client to cause a denial of service (forced re-authentication) via forged Authorization headers when AuthDigestNcCheck is enabled. (CVE-2026-48005)

- An out-of-bounds write vulnerability exists in mod_charset_lite in finish_partial_char. (CVE-2026-56153)

- A use-after-free vulnerability exists in mod_rewrite when using lookahead (%{LA-U:HTTP:...}). (CVE-2026-56154)

- An out-of-bounds write vulnerability in mod_proxy_html can be triggered with crafted HTTP response bodies. (CVE-2026-56449)

- A use-after-free vulnerability exists in mod_http2 via shared session->bbtmp re-entrancy. (CVE-2026-57941)

- An information disclosure vulnerability in mod_dav_fs allows a remote client to read WebDAV dead properties of resources it cannot author via a GET request for the .DAV state directory. (CVE-2026-58415)

- An out-of-bounds write vulnerability exists on Windows while processing paths with 8.3 names that may grow when expanded. (CVE-2026-59685)

- An improper privilege management vulnerability exists in mod_ssl via SSLRequire and file-related expressions in .htaccess files. (CVE-2026-59797)

- Improper validation of the FTP PASV reply address in mod_proxy_ftp allows, in forward proxy configurations, an untrusted FTP server to make the proxy open a data connection to an arbitrary third-party host. (CVE-2026-63045)

- A stack-based buffer overflow in mod_vhost_alias allows a remote client to cause a denial of service or potentially execute arbitrary code via a Host header exceeding 8192 bytes when VirtualDocumentRoot uses a hostname format specifier and LimitRequestFieldSize is raised above the default. (CVE-2026-63292)

- A NULL pointer dereference in mod_xml2enc allows an untrusted backend server to cause a denial of service via a proxied response with a charset whose conversion partially succeeds then fails. (CVE-2026-63686)

- A response smuggling vulnerability exists in mod_proxy_uwsgi via a crafted uwsgi response with Transfer-Encoding. (CVE-2026-63718)

- An authentication bypass by capture-replay in mod_auth_digest allows a man-in-the-middle attacker to replay captured digest credentials when AuthDigestNonceLifetime is set to 0. (CVE-2026-73636)

- A use-after-free in mod_auth_digest allows an unauthenticated remote client to cause authentication state corruption via concurrent Digest authentication requests when AuthDigestNcCheck is enabled or AuthDigestNonceLifetime is set to 0. (CVE-2026-73637)

- A path equivalence ('/./') vulnerability in mod_userdir allows information disclosure when configured with an absolute non-wildcard UserDir directive. (CVE-2026-79768)

- An integer overflow in mod_dav_fs allows an authenticated WebDAV client with write access to crash worker processes and persistently corrupt a directory's property database via PROPPATCH requests declaring many XML namespaces. (CVE-2026-93546)

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