{"id":"CVE-2022-1941","aliases":["GHSA-8gq9-2x98-w8hf","PYSEC-2026-899"],"url":"https://o3.security/vulnerability/CVE-2022-1941","summary":"Out of Memory issue in ProtocolBuffers for cpp and python","details":"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 Versions for 3.16 and 3.17 are no longer updated.","published":"2022-09-22T00:00:00Z","modified":"2026-08-12T12:59:31.462666Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"protobuf","fixedVersion":"3.18.3"},{"ecosystem":"PyPI","name":"protobuf","fixedVersion":"3.19.5"},{"ecosystem":"PyPI","name":"protobuf","fixedVersion":"3.20.2"},{"ecosystem":"PyPI","name":"protobuf","fixedVersion":"4.21.6"}],"fix":null,"references":[{"type":"WEB","url":"https://cloud.google.com/support/bulletins#GCP-2022-019"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/1xxx/CVE-2022-1941.json"},{"type":"ADVISORY","url":"https://github.com/protocolbuffers/protobuf/security/advisories/GHSA-8gq9-2x98-w8hf"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CBAUKJQL6O4TIWYBENORSY5P43TVB4M3/"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MPCGUT3T5L6C3IDWUPSUO22QDCGQKTOP/"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-1941"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20240705-0001/"},{"type":"ARTICLE","url":"http://www.openwall.com/lists/oss-security/2022/09/27/1"},{"type":"ARTICLE","url":"https://lists.debian.org/debian-lts-announce/2023/04/msg00019.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T12:59:31.462666Z"}}