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 provide command-line configuration for Pacemaker and Corosync. Two security flaws are addressed in this advisory: CVE-2026-31958, a denial of service vulnerability in the tornado-python component triggered by large multipart bodies, and CVE-2026-4800, an arbitrary code execution vulnerability in lodash due to untrusted input in template imports. These vulnerabilities have been rated as important by Red Hat Product Security. The advisory references updated pcs packages (version 0.10.12-6.el8_6.13) that fix these issues. The affected versions include Red Hat Enterprise Linux 8.6 releases prior to 8.6.14 across various update services and architectures.
Potential Impact
Successful exploitation of CVE-2026-31958 could cause denial of service conditions via large multipart bodies in tornado-python. CVE-2026-4800 could allow arbitrary code execution through untrusted input in lodash template imports. These vulnerabilities could impact the availability and security of systems running affected versions of Red Hat Enterprise Linux 8.6 pcs packages, potentially allowing attackers to disrupt services or execute malicious code.
Mitigation Recommendations
Red Hat has released updated pcs packages (version 0.10.12-6.el8_6.13) that address these vulnerabilities. Users should apply the security update for Red Hat Enterprise Linux 8.6 to remediate these issues. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor advisory.
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 provide command-line configuration for Pacemaker and Corosync. Two security flaws are addressed in this advisory: CVE-2026-31958, a denial of service vulnerability in the tornado-python component triggered by large multipart bodies, and CVE-2026-4800, an arbitrary code execution vulnerability in lodash due to untrusted input in template imports. These vulnerabilities have been rated as important by Red Hat Product Security. The advisory references updated pcs packages (version 0.10.12-6.el8_6.13) that fix these issues. The affected versions include Red Hat Enterprise Linux 8.6 releases prior to 8.6.14 across various update services and architectures.
Potential Impact
Successful exploitation of CVE-2026-31958 could cause denial of service conditions via large multipart bodies in tornado-python. CVE-2026-4800 could allow arbitrary code execution through untrusted input in lodash template imports. These vulnerabilities could impact the availability and security of systems running affected versions of Red Hat Enterprise Linux 8.6 pcs packages, potentially allowing attackers to disrupt services or execute malicious code.
Mitigation Recommendations
Red Hat has released updated pcs packages (version 0.10.12-6.el8_6.13) that address these vulnerabilities. Users should apply the security update for Red Hat Enterprise Linux 8.6 to remediate these issues. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor advisory.
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"]
Threat ID: 6a160974e29bf47b5063dae1
Added to database: 05/26/2026, 20:58:28 UTC
Last enriched: 08/10/2026, 20:22:50 UTC
Last updated: 09/11/2026, 07:31:53 UTC
Views: 70
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.