{"id":"CVE-2021-22569","aliases":["GHSA-wrvw-hg22-4m67"],"url":"https://o3.security/vulnerability/CVE-2021-22569","summary":"A potential Denial of Service issue in protobuf-java","details":"An issue in protobuf-java allowed the interleaving of com.google.protobuf.UnknownFieldSet fields in such a way that would be processed out of order. A small malicious payload can occupy the parser for several minutes by creating large numbers of short-lived objects that cause frequent, repeated pauses. We recommend upgrading libraries beyond the vulnerable versions.","published":"2022-01-10T14:10:16.747Z","modified":"2026-08-07T15:15:10.415006Z","cvss":{"score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Maven","name":"com.google.protobuf:protobuf-java","fixedVersion":"3.16.1"},{"ecosystem":"Maven","name":"com.google.protobuf:protobuf-java","fixedVersion":"3.18.2"},{"ecosystem":"Maven","name":"com.google.protobuf:protobuf-java","fixedVersion":"3.19.2"},{"ecosystem":"Maven","name":"com.google.protobuf:protobuf-kotlin","fixedVersion":"3.18.2"},{"ecosystem":"Maven","name":"com.google.protobuf:protobuf-kotlin","fixedVersion":"3.19.2"},{"ecosystem":"RubyGems","name":"google-protobuf","fixedVersion":"3.19.2"}],"fix":null,"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/04/msg00019.html"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2022/01/12/4"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2022/01/12/7"},{"type":"ADVISORY","url":"https://cloud.google.com/support/bulletins#gcp-2022-001"},{"type":"REPORT","url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=39330"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpuapr2022.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T15:15:10.415006Z"}}