A flaw was found in RESTEasy's CorsFilter, which, when configured to allow all origins ("*"), reflects the request's Origin header back in the Access-Control-Allow-Origin response together with Access-Control-Allow-Credentials: true. This permissive cross-origin policy allows a malicious website to make credentialed cross-origin requests and read authenticated responses from a victim's session, resulting in a loss of confidentiality.

rocky_linux RLSA-2026:92408: RLSA-2026:92408: dogtag-pki security update (Important)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:92408 advisory.

    IdM PKI is an enterprise software system designed to manage enterprise Public Key Infrastructure     deployments.  IdM PKI consists of the following components:
      * Certificate Authority (CA)
      * Key Recovery Authority (KRA)
      * Online Certificate Status Protocol (OCSP) Manager
      * Token Key Service (TKS)
      * Token Processing Service (TPS)
      * Automatic Certificate Management Environment (ACME) Responder
      * Enrollment over Secure Transport (EST) Responder

    Security Fix(es):

    * resteasy-core: RESTEasy: IIOImageProvider Unbounded Image Decode (Decompression-Bomb DoS)     (CVE-2026-89059)

    * resteasy-core: RESTEasy: CorsFilter Reflects Arbitrary Origin with Credentials under Wildcard Config     (CVE-2026-89058)

    * com.fasterxml.jackson/jackson-core: tools.jackson.core/jackson-core: Jackson-core: Denial of Service via     regular expression backtracking (CVE-2026-89407)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-92408 advisory.

    - Fix CVE-2026-89059: RESTEasy IIOImageProvider Unbounded Image Decode
    - Fix CVE-2026-89058: RESTEasy CorsFilter Reflects Arbitrary Origin with Credentials under Wildcard Config
    - Fix CVE-2026-89407: Jackson-core: Denial of Service via regular expression backtracking

Tenable has extracted the preceding description block directly from the Oracle Linux 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 Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-2026_85234 advisory.

    * resteasy-core: RESTEasy: IIOImageProvider Unbounded Image Decode (Decompression-Bomb DoS)     (CVE-2026-89059)

    * resteasy-core: RESTEasy: CorsFilter Reflects Arbitrary Origin with Credentials under Wildcard Config     (CVE-2026-89058)

Tenable has extracted the preceding description block directly from the CIQ 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 MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-2106:02 advisory.

    * resteasy-core: RESTEasy: IIOImageProvider Unbounded Image Decode (Decompression-Bomb DoS)     (CVE-2026-89059)
      * resteasy-core: RESTEasy: CorsFilter Reflects Arbitrary Origin with Credentials under Wildcard Config     (CVE-2026-89058)

Tenable has extracted the preceding description block directly from the MiracleLinux 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 AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:85234 advisory.

    * resteasy-core: RESTEasy: IIOImageProvider Unbounded Image Decode (Decompression-Bomb DoS)     (CVE-2026-89059)
      * resteasy-core: RESTEasy: CorsFilter Reflects Arbitrary Origin with Credentials under Wildcard Config     (CVE-2026-89058)

Tenable has extracted the preceding description block directly from the AlmaLinux 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 RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:85234 advisory.

    * resteasy-core: RESTEasy: IIOImageProvider Unbounded Image Decode (Decompression-Bomb DoS)     (CVE-2026-89059)

    * resteasy-core: RESTEasy: CorsFilter Reflects Arbitrary Origin with Credentials under Wildcard Config     (CVE-2026-89058)

Tenable has extracted the preceding description block directly from the RockyLinux 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 Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-85234 advisory.

    - Fix CVE-2026-89058: CorsFilter Reflects Arbitrary Origin with Credentials under Wildcard Config
    - Fix CVE-2026-89059: IIOImageProvider Unbounded Image Decode (Decompression-Bomb DoS)

Tenable has extracted the preceding description block directly from the Oracle Linux 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 Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:85234 advisory.

    RESTEasy contains a JBoss project that provides frameworks to help build RESTful Web Services and RESTful     Java applications. It is a fully certified and portable implementation of the JAX-RS specification.

    Security Fix(es):

    * resteasy-core: RESTEasy: IIOImageProvider Unbounded Image Decode (Decompression-Bomb DoS)     (CVE-2026-89059)

    * resteasy-core: RESTEasy: CorsFilter Reflects Arbitrary Origin with Credentials under Wildcard Config     (CVE-2026-89058)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw was found in RESTEasy's CorsFilter, which, when configured to allow all origins (*), reflects the     request's Origin header back in the Access-Control-Allow-Origin response together with Access-Control-     Allow-Credentials: true. This permissive cross-origin policy allows a malicious website to make     credentialed cross-origin requests and read authenticated responses from a victim's session, resulting in     a loss of confidentiality. (CVE-2026-89058)

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

ID	Name	Product	Family	Type	Severity
373992	RHEL 10 : dogtag-pki (RHSA-2026:92408)	Nessus	Red Hat Local Security Checks	Local	high
373917	Oracle Linux 10 : dogtag-pki (ELSA-2026-92408)	Nessus	Oracle Linux Local Security Checks	Local	high
369912	Rocky Linux 9 [CIQ] Security Update: pki-resteasy-client / pki-resteasy-core / etc Multiple Vulnerabilities (crlsa-2026_85234)	Nessus	Rocky Linux Local Security Checks	Local	high
369325	MiracleLinux 9 : resteasy-3.0.26-20.el9_8.1 (AXSA:2026-2106:02)	Nessus	Miracle Linux Local Security Checks	Local	high
369082	AlmaLinux 9 : resteasy (ALSA-2026:85234)	Nessus	Alma Linux Local Security Checks	Local	high
367800	RockyLinux 9 : resteasy (RLSA-2026:85234)	Nessus	Rocky Linux Local Security Checks	Local	high
367395	Oracle Linux 9 : resteasy (ELSA-2026-85234)	Nessus	Oracle Linux Local Security Checks	Local	high
367381	RHEL 9 : resteasy (RHSA-2026:85234)	Nessus	Red Hat Local Security Checks	Local	high
348234	Linux Distros Unpatched Vulnerability : CVE-2026-89058	Nessus	Misc.	Local	high

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