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OpenAdvisories
High ALSA-2026:3095 1 CVE

Important: protobuf security update

Published Feb 23, 2026 · Updated Oct 29, 2026

Summary

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.

Fixed packages 6

ReleasePackageFixed in
AlmaLinux · 9 protobuf 3.14.0-17.el9_7
AlmaLinux · 9 protobuf-compiler 3.14.0-17.el9_7
AlmaLinux · 9 protobuf-devel 3.14.0-17.el9_7
AlmaLinux · 9 protobuf-lite 3.14.0-17.el9_7
AlmaLinux · 9 protobuf-lite-devel 3.14.0-17.el9_7
AlmaLinux · 9 python3-protobuf 3.14.0-17.el9_7

Vulnerabilities 1

  • High 8.2
    CVE-2026-0994 Public exploit

    Denial of Service in Python Protobuf

    A denial-of-service (DoS) vulnerability exists in google.protobuf.json_format.ParseDict() in Python, where the max_recursion_depth limit can be bypassed when parsing nested google.protobuf.Any messages. Due to missing recursion depth accounting inside the int…

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-0994
  • report
    https://bugzilla.redhat.com/2432398
  • advisory
    https://errata.almalinux.org/9/ALSA-2026-3095.html