Red Hat Security Advisory: pcs security update
The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities. Security Fix(es): * tornado-python: Tornado: Denial of Service via large multipart bodies (CVE-2026-31958) * lodash: lodash: Arbitrary code execution via untrusted input in template imports (CVE-2026-4800) 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.
AI Analysis
Technical Summary
The pcs packages in Red Hat Enterprise Linux 8.6 High Availability provide command-line configuration for Pacemaker and Corosync. This advisory addresses two security issues: CVE-2026-31958, a denial of service vulnerability in tornado-python triggered by large multipart bodies, and CVE-2026-4800, an arbitrary code execution vulnerability in lodash through untrusted input in template imports. Red Hat has released updated pcs packages (version 0.10.12-6.el8_6.13) for multiple architectures and variants to remediate these issues. The advisory classifies the update as Important and references the CVE pages for detailed impact and scoring information. No known exploits in the wild are reported.
Potential Impact
The vulnerabilities include a denial of service condition (CVE-2026-31958) and the potential for arbitrary code execution (CVE-2026-4800) if untrusted input is processed in lodash templates. These issues could impact the stability and security of systems using the pcs packages for cluster management. The advisory rates the overall security impact as Important, indicating a significant risk if unpatched.
Mitigation Recommendations
Red Hat has released updated pcs packages (pcs-0.10.12-6.el8_6.13) for Red Hat Enterprise Linux 8.6 High Availability variants to address these vulnerabilities. Users should apply these official updates as described in the Red Hat advisory (https://access.redhat.com/articles/11258) to remediate the issues. No additional mitigation steps are indicated beyond applying the provided patches.
Red Hat Security Advisory: pcs security update
Description
The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities. Security Fix(es): * tornado-python: Tornado: Denial of Service via large multipart bodies (CVE-2026-31958) * lodash: lodash: Arbitrary code execution via untrusted input in template imports (CVE-2026-4800) 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.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The pcs packages in Red Hat Enterprise Linux 8.6 High Availability provide command-line configuration for Pacemaker and Corosync. This advisory addresses two security issues: CVE-2026-31958, a denial of service vulnerability in tornado-python triggered by large multipart bodies, and CVE-2026-4800, an arbitrary code execution vulnerability in lodash through untrusted input in template imports. Red Hat has released updated pcs packages (version 0.10.12-6.el8_6.13) for multiple architectures and variants to remediate these issues. The advisory classifies the update as Important and references the CVE pages for detailed impact and scoring information. No known exploits in the wild are reported.
Potential Impact
The vulnerabilities include a denial of service condition (CVE-2026-31958) and the potential for arbitrary code execution (CVE-2026-4800) if untrusted input is processed in lodash templates. These issues could impact the stability and security of systems using the pcs packages for cluster management. The advisory rates the overall security impact as Important, indicating a significant risk if unpatched.
Mitigation Recommendations
Red Hat has released updated pcs packages (pcs-0.10.12-6.el8_6.13) for Red Hat Enterprise Linux 8.6 High Availability variants to address these vulnerabilities. Users should apply these official updates as described in the Red Hat advisory (https://access.redhat.com/articles/11258) to remediate the issues. No additional mitigation steps are indicated beyond applying the provided patches.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:11494
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-31958"]
- Cvss Version
- null
Threat ID: 6a160974e29bf47b5063dae1
Added to database: 05/26/2026, 20:58:28 UTC
Last enriched: 07/26/2026, 00:10:40 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 49
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