RHSA-2026:11454 - Security Advisory

Topic

An update for pcs is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions.

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-python: Tornado: Denial of Service via large multipart bodies (CVE-2026-31958)
• lodash: lodash: Arbitrary code execution via untrusted input in template imports (CVE-2026-4800)

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 Power LE - Update Services for SAP Solutions 9.0 ppc64le
• Red Hat Enterprise Linux High Availability for x86_64 - Update Services for SAP Solutions 9.0 x86_64
• Red Hat Enterprise Linux High Availability for ARM 64 - 4 years of updates 9.0 aarch64
• Red Hat Enterprise Linux High Availability for IBM z Systems - 4 years of updates 9.0 s390x
• Red Hat Enterprise Linux Resilient Storage for x86_64 - 4 years of updates 9.0 x86_64
• Red Hat Enterprise Linux Resilient Storage for Power, little endian - 4 years of updates 9.0 ppc64le
• Red Hat Enterprise Linux Resilient Storage for IBM z Systems - 4 years of updates 9.0 s390x

Fixes

• BZ - 2446765 - CVE-2026-31958 tornado-python: Tornado: Denial of Service via large multipart bodies
• BZ - 2453496 - CVE-2026-4800 lodash: lodash: Arbitrary code execution via untrusted input in template imports

CVEs

• CVE-2026-4800
• CVE-2026-31958

References

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