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CVE-2025-46727VulnerabilityPublished Updated

Red Hat Security Advisory: pcs security update

Affects Red Hat rackSource GCVE Database

0

Not known to be exploited : upgrade Red Hat rack to 3.0.0 soon.

Data as of 26 Oct 2026, 14:05 UTC

Severity
High

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

EPSS
1.2% chance of exploitation in 30 days – higher than 68% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.0.0

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 May 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  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), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade rack to 3.0.0.

Affected software

ProductAffectedFixed in
RubyGemsrackpkg:gem/rackOther threatsAffected
  • <3.0.0
Fixed in
  • 3.0.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities. Security Fix(es): * rubygem-rack: Unbounded-Parameter DoS in Rack::QueryParser (CVE-2025-46727) 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.

References

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