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High severity7.5NVD Advisory· Published Sep 22, 2022· Updated Jun 17, 2026

CVE-2022-1941

CVE-2022-1941

Description

A parsing vulnerability for the MessageSet type in the ProtocolBuffers versions prior to and including 3.16.1, 3.17.3, 3.18.2, 3.19.4, 3.20.1 and 3.21.5 for protobuf-cpp, and versions prior to and including 3.16.1, 3.17.3, 3.18.2, 3.19.4, 3.20.1 and 4.21.5 for protobuf-python can lead to out of memory failures. A specially crafted message with multiple key-value per elements creates parsing issues, and can lead to a Denial of Service against services receiving unsanitized input. We recommend upgrading to versions 3.18.3, 3.19.5, 3.20.2, 3.21.6 for protobuf-cpp and 3.18.3, 3.19.5, 3.20.2, 4.21.6 for protobuf-python. Versions for 3.16 and 3.17 are no longer updated.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
protobufPyPI
< 3.18.33.18.3
protobufPyPI
>= 3.19.0, < 3.19.53.19.5
protobufPyPI
>= 3.20.0, < 3.20.23.20.2
protobufPyPI
>= 4.0.0, < 4.21.64.21.6

Affected products

235

Patches

Vulnerability mechanics

References

14

News mentions

0

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