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 that fix the prototype pollution vulnerability. Users of affected Red Hat Enterprise Linux High Availability 10.0 Extended Update Support should apply the provided security update as described in the Red Hat advisory (RHSA-2026:2818) and the update instructions at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official patch.
Description
A prototype pollution vulnerability (CVE-2025-13465) affecting lodash functions _.unset and _.omit has been identified and fixed in the pcs packages used for configuring Pacemaker and Corosync utilities in Red Hat Enterprise Linux High Availability 10.0 Extended Update Support. Red Hat has issued an important security advisory with updated packages to address this issue.