Resource Exhaustion Affecting pcs package, versions <0:0.10.18-2.el8_10.7.alma.1


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.54% (41st percentile)

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  • Snyk IDSNYK-ALMALINUX8-PCS-14089289
  • published21 Nov 2025
  • disclosed11 Nov 2025

Introduced: 11 Nov 2025

CVE-2025-59830  (opens in a new tab)
CWE-400  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 pcs to version 0:0.10.18-2.el8_10.7.alma.1 or higher.
This issue was patched in ALSA-2025:19719.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pcs package and not the pcs package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

Rack is a modular Ruby web server interface. Prior to version 2.2.18, Rack::QueryParser enforces its params_limit only for parameters separated by &, while still splitting on both & and ;. As a result, attackers could use ; separators to bypass the parameter count limit and submit more parameters than intended. Applications or middleware that directly invoke Rack::QueryParser with its default configuration (no explicit delimiter) could be exposed to increased CPU and memory consumption. This can be abused as a limited denial-of-service vector. This issue has been patched in version 2.2.18.

CVSS Base Scores

version 3.1