Red Hat Security Advisory: pcs security update
Affects Red Hat pcsSource GCVE Database
Not known to be exploited.
Data as of 31 Oct 2026, 20:20 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 1.8% chance of exploitation in 30 days – higher than 78% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 17 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
Public exploit code: GitHub proofs of concept
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 31 Oct 2026.
What to do
AI-suggested
Red Hat has released updated pcs packages for Red Hat Enterprise Linux 9.6 Extended Update Support and related variants that fix the prototype pollution vulnerability (CVE-2025-13465). Users should apply these official updates following Red Hat's published guidance at https://access.redhat.com/articles/11258. No additional mitigation actions are specified or required beyond applying the update.
Description
A security update for the pcs packages in Red Hat Enterprise Linux addresses a prototype pollution vulnerability in lodash's _.unset and _.omit functions (CVE-2025-13465). This vulnerability affects the command-line configuration system for Pacemaker and Corosync utilities. The update is rated as having an Important security impact by Red Hat Product Security. The advisory applies to multiple Red Hat Enterprise Linux 9.6 Extended Update Support and Update Services for SAP Solutions variants. Users are advised to apply the update as per Red Hat's guidance.