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CVE-2025-46727VulnerabilityPublished Updated

Red Hat Security Advisory: pcs security update

Affects Red HatSource GCVE Database

0

Mentioned vulnerabilities

Not known to be exploited : upgrade to 3.0.0 soon.

Data as of 26 Oct 2026, 06:26 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 28 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 2026-10-26.

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.

AI-suggested

Red Hat has released updated pcs packages that fix these vulnerabilities. Users of Red Hat Enterprise Linux 8.8 Extended Update Support and related variants should apply the provided security update (pcs-0.10.15-4.el8_8.6) as detailed in the Red Hat advisory RHSA-2025:8279. Refer to https://access.redhat.com/articles/11258 for update instructions. No additional mitigation steps are indicated by the vendor.

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) * tornado: Tornado Multipart Form-Data Denial of Service (CVE-2025-47287) 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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