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High ALAS2023-2026-1407 1 CVE

Important: protobuf security update (Amazon Linux 2023)

Published Feb 16, 2026 · Updated Feb 18, 2026

Summary

Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-0994: 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 internal Any-handling logic, an attacker can supply deeply nested Any structures that bypass the intended recursion limit, eventually exhausting Python's recursion stack and causing a RecursionError.

Fixed packages 15

ReleasePackageFixed in
Amazon Linux · 2023 protobuf 0:3.19.6-1.amzn2023.0.3
Amazon Linux · 2023 protobuf-compiler 0:3.19.6-1.amzn2023.0.3
Amazon Linux · 2023 protobuf-compiler-debuginfo 0:3.19.6-1.amzn2023.0.3
Amazon Linux · 2023 protobuf-debuginfo 0:3.19.6-1.amzn2023.0.3
Amazon Linux · 2023 protobuf-debugsource 0:3.19.6-1.amzn2023.0.3
Amazon Linux · 2023 protobuf-devel 0:3.19.6-1.amzn2023.0.3
Amazon Linux · 2023 protobuf-emacs 0:3.19.6-1.amzn2023.0.3
Amazon Linux · 2023 protobuf-lite 0:3.19.6-1.amzn2023.0.3
Amazon Linux · 2023 protobuf-lite-debuginfo 0:3.19.6-1.amzn2023.0.3
Amazon Linux · 2023 protobuf-lite-devel 0:3.19.6-1.amzn2023.0.3
Amazon Linux · 2023 protobuf-lite-static 0:3.19.6-1.amzn2023.0.3
Amazon Linux · 2023 protobuf-static 0:3.19.6-1.amzn2023.0.3
Amazon Linux · 2023 protobuf-vim 0:3.19.6-1.amzn2023.0.3
Amazon Linux · 2023 python3-protobuf 0:3.19.6-1.amzn2023.0.3
Amazon Linux · 2023 python3-protobuf-debuginfo 0:3.19.6-1.amzn2023.0.3

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

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-0994.html