{"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":"### Summary\n\nA message parsing and memory management vulnerability in ProtocolBuffer’s C++ and Python implementations can trigger an out of memory (OOM) failure when processing a specially crafted message, which could lead to a denial of service (DoS) on services using the libraries.\n\nReporter: [ClusterFuzz](https://google.github.io/clusterfuzz/)\n\nAffected versions: All versions of C++ Protobufs (including Python) prior to the versions listed below.\n\n### Severity & Impact\nAs scored by google  \n**Medium 5.7** - [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)  \nAsscored byt NIST  \n**High 7.5** - [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)\n\nA small (~500 KB) malicious payload can be constructed which causes the running service to allocate more than 3GB of RAM.\n\n### Proof of Concept\n\nFor reproduction details, please refer to the unit test that identifies the specific inputs that exercise this parsing weakness.\n\n### Mitigation / Patching\n\nPlease update to the latest available versions of the following packages:\n- protobuf-cpp (3.18.3, 3.19.5, 3.20.2, 3.21.6)\n- protobuf-python (3.18.3, 3.19.5, 3.20.2, 4.21.6)","published":"2022-09-22T00:00:00Z","modified":"2026-10-28T10:23:10.431859187Z","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"},{"type":"PACKAGE","url":"https://github.com/protocolbuffers/protobuf"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CBAUKJQL6O4TIWYBENORSY5P43TVB4M3"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MPCGUT3T5L6C3IDWUPSUO22QDCGQKTOP"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CBAUKJQL6O4TIWYBENORSY5P43TVB4M3"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MPCGUT3T5L6C3IDWUPSUO22QDCGQKTOP"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20240705-0001"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T10:23:10.431859187Z"}}