RHSA-2026:19008 - Security Advisory

Topic

An update for pcs is now available for Red Hat Enterprise Linux 10.

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):

• 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 x86_64 10 x86_64
• Red Hat Enterprise Linux High Availability for ARM 64 10 aarch64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support 10.2 x86_64
• Red Hat Enterprise Linux High Availability for IBM z Systems 10 s390x
• Red Hat Enterprise Linux High Availability for Power, little endian 10 ppc64le
• Red Hat Enterprise Linux High Availability for Power, little endian - Extended Update Support 10.2 ppc64le
• Red Hat Enterprise Linux High Availability (for IBM z Systems) - Extended Update Support 10.2 s390x
• Red Hat Enterprise Linux High Availability (for ARM 64) - Extended Update Support 10.2 aarch64
• Red Hat Enterprise Linux High Availability for ARM 64 - 4 years of updates 10.2 aarch64
• Red Hat Enterprise Linux High Availability for IBM z Systems - 4 years of updates 10.2 s390x
• Red Hat Enterprise Linux High Availability for Power, little endian - 4 years of updates 10.2 ppc64le
• Red Hat Enterprise Linux High Availability for x86_64 - 4 years of updates 10.2 x86_64
• Red Hat Enterprise Linux High Availability for ARM 64 - Extended Life Cycle 10.2 aarch64
• Red Hat Enterprise Linux High Availability for Power, little endian - Extended Life Cycle 10.2 ppc64le
• Red Hat Enterprise Linux High Availability for IBM z Systems - Extended Life Cycle 10.2 s390x
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Life Cycle 10.2 x86_64

Fixes

• BZ - 2453496 - CVE-2026-4800 lodash: lodash: Arbitrary code execution via untrusted input in template imports

CVEs

• CVE-2026-4800

References

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