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CVE-2026-4800VulnerabilityPublished Updated

Red Hat Security Advisory: pcs security update

Affects Red Hat pcsSource GCVE Database

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Not known to be exploited.

Data as of 30 Oct 2026, 11:52 UTC

Severity
High

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS
2.8% chance of exploitation in 30 days – higher than 86% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 19 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 30 Oct 2026.

What to do

AI-suggested

Red Hat has released an official security update for pcs packages in Red Hat Enterprise Linux 10 and its extended update support versions. Users should apply the update pcs-0.12.2-3.el10_2.1 or later as provided by Red Hat to remediate this vulnerability. Refer to Red Hat's official update article (https://access.redhat.com/articles/11258) for detailed instructions on applying the patch.

Description

A security vulnerability (CVE-2026-4800) affecting the pcs packages used in Red Hat Enterprise Linux High Availability has been addressed. The issue involves arbitrary code execution via untrusted input in lodash template imports. Red Hat has issued an important security update for pcs in Red Hat Enterprise Linux 10 and its extended update support versions. The update mitigates the risk by patching the lodash component to prevent exploitation.

References

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