RHSA-2026:3219 — Security Advisory

An update for protobuf is now available for Red Hat Enterprise Linux 9.6 Extended Update Support.

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.

The protobuf packages provide Protocol Buffers, Google's data interchange format. Protocol Buffers can encode structured data in an efficient yet extensible format, and provide a flexible, efficient, and automated mechanism for serializing structured data.

Security Fix(es):

• python: protobuf: Protobuf: Denial of Service due to recursion depth bypass (CVE-2026-0994)

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.