RHSA-2026:2462 - Security Advisory

Topic

An update for pcs is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.

Security Fix(es):

• tornado: Tornado Quadratic DoS via Repeated Header Coalescing (CVE-2025-67725)
• tornado: Tornado Quadratic DoS via Crafted Multipart Parameters (CVE-2025-67726)
• lodash: prototype pollution in _.unset and _.omit functions (CVE-2025-13465)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux High Availability for x86_64 - Advanced Update Support 8.4 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support Extension 8.4 x86_64

Fixes

• BZ - 2421722 - CVE-2025-67725 tornado: Tornado Quadratic DoS via Repeated Header Coalescing
• BZ - 2421733 - CVE-2025-67726 tornado: Tornado Quadratic DoS via Crafted Multipart Parameters
• BZ - 2431740 - CVE-2025-13465 lodash: prototype pollution in _.unset and _.omit functions

CVEs

• CVE-2025-13465
• CVE-2025-67725
• CVE-2025-67726

References

• https://access.redhat.com/security/updates/classification/#important