ajv (Another JSON Schema Validator) before 8.18.0 is vulnerable to Regular Expression Denial of Service (ReDoS) when the $data option is enabled. The pattern keyword accepts runtime data via JSON Pointer syntax ($data reference), which is passed directly to the JavaScript RegExp() constructor without validation. An attacker can inject a malicious regex pattern (e.g., "^(a|a)*$") combined with crafted input to cause catastrophic backtracking. A 31-character payload causes approximately 44 seconds of CPU blocking, with each additional character doubling execution time. This enables complete denial of service with a single HTTP request against any API using ajv with $data: true for dynamic schema validation. This issue is also fixed in version 6.14.0.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:6277 advisory.

    Red Hat Ansible Automation Platform provides an enterprise framework for building, deploying and managing     IT automation at scale. IT Managers can provide top-down guidelines on how automation is applied to     individual teams, while automation developers retain the freedom to write tasks that leverage existing     knowledge without the overhead. Ansible Automation Platform makes it possible for users across an     organization to share, vet, and manage automation content by means of a simple, powerful, and agentless     language.

    Security Fix(es):

    * automation-gateway-proxy: Unexpected session resumption in crypto/tls (CVE-2025-68121)
    * automation-gateway-proxy: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726)
    * automation-platform-ui: SVGO: Denial of Service via XML entity expansion (CVE-2026-29074)
    * automation-platform-ui: Minimatch: Denial of Service via catastrophic backtracking in glob expressions     (CVE-2026-27904)
    * automation-platform-ui: ReDoS via $data reference (CVE-2025-69873)
    * automation-platform-ui: Axios affected by Denial of Service via __proto__ Key in mergeConfig     (CVE-2026-25639)
    * python3.12-pillow: Pillow: Out-of-bounds Write via Specially Crafted PSD Image (CVE-2026-25990)

    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.

    IMPORTANT: All users must download the latest version of the installer. Attempting to install or upgrade     with a previous version of the installer could result in failure.

    For details about this release, refer to the release notes 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 Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-bef5344f9f advisory.

    Update to pgadmin4-9.13.

Tenable has extracted the preceding description block directly from the Fedora 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 Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-416a89747f advisory.

    Update to pgadmin4-9.13.

Tenable has extracted the preceding description block directly from the Fedora 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 Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-220c4ca745 advisory.

    Update to pgadmin4-9.13.

Tenable has extracted the preceding description block directly from the Fedora 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.

  - ajv (Another JSON Schema Validator) before 8.18.0 is vulnerable to Regular Expression Denial of Service     (ReDoS) when the $data option is enabled. The pattern keyword accepts runtime data via JSON Pointer syntax     ($data reference), which is passed directly to the JavaScript RegExp() constructor without validation. An     attacker can inject a malicious regex pattern (e.g., ^(a|a)*$) combined with crafted input to cause     catastrophic backtracking. A 31-character payload causes approximately 44 seconds of CPU blocking, with     each additional character doubling execution time. This enables complete denial of service with a single     HTTP request against any API using ajv with $data: true for dynamic schema validation. This issue is also     fixed in version 6.14.0. (CVE-2025-69873)

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

ID	Name	Product	Family	Severity
304424	RHEL 9 : Red Hat Ansible Automation Platform 2.6 Product Security and Bug Fix Update (Important) (RHSA-2026:6277)	Nessus	Red Hat Local Security Checks	critical
302491	Fedora 43 : pgadmin4 (2026-bef5344f9f)	Nessus	Fedora Local Security Checks	medium
302489	Fedora 42 : pgadmin4 (2026-416a89747f)	Nessus	Fedora Local Security Checks	medium
302367	Fedora 44 : pgadmin4 (2026-220c4ca745)	Nessus	Fedora Local Security Checks	medium
298757	Linux Distros Unpatched Vulnerability : CVE-2025-69873	Nessus	Misc.	high

Detections

Analytics

CVE-2025-69873

medium

Tenable Plugins

critical

medium

medium

medium

high