{"cve":"CVE-2021-22569","nvd":{"published":"2022-01-10T14:10:16.747","modified":"2026-06-17T03:37:26.723","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-696"],"references":["http://www.openwall.com/lists/oss-security/2022/01/12/4","http://www.openwall.com/lists/oss-security/2022/01/12/7","https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=39330","https://cloud.google.com/support/bulletins#gcp-2022-001","https://lists.debian.org/debian-lts-announce/2023/04/msg00019.html"],"products":["google:google-protobuf","google:protobuf-java","google:protobuf-kotlin","oracle:communications_cloud_native_core_console","oracle:communications_cloud_native_core_network_repository_function","oracle:communications_cloud_native_core_policy","oracle:spatial_and_graph_mapviewer"],"source":"nvd","synced_at":"2026-10-19T21:26:33.761856376+00:00"},"epss":{"cve":"CVE-2021-22569","score":0.01795,"percentile":0.78426,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-wrvw-hg22-4m67","url":"https://osv.dev/vulnerability/GHSA-wrvw-hg22-4m67","summary":"A potential Denial of Service issue in protobuf-java","modified":"2026-09-10T03:49:12.224093549Z","packages":[{"ecosystem":"Maven","name":"com.google.protobuf:protobuf-java","purl":"pkg:maven/com.google.protobuf/protobuf-java","ranges":["<3.16.1"],"fixed":["3.16.1"]},{"ecosystem":"RubyGems","name":"google-protobuf","purl":"pkg:gem/google-protobuf","ranges":["<3.19.2"],"fixed":["3.19.2"]},{"ecosystem":"Maven","name":"com.google.protobuf:protobuf-java","purl":"pkg:maven/com.google.protobuf/protobuf-java","ranges":[">=3.18.0 <3.18.2"],"fixed":["3.18.2"]},{"ecosystem":"Maven","name":"com.google.protobuf:protobuf-java","purl":"pkg:maven/com.google.protobuf/protobuf-java","ranges":[">=3.19.0 <3.19.2"],"fixed":["3.19.2"]},{"ecosystem":"Maven","name":"com.google.protobuf:protobuf-kotlin","purl":"pkg:maven/com.google.protobuf/protobuf-kotlin","ranges":[">=3.18.0 <3.18.2"],"fixed":["3.18.2"]},{"ecosystem":"Maven","name":"com.google.protobuf:protobuf-kotlin","purl":"pkg:maven/com.google.protobuf/protobuf-kotlin","ranges":[">=3.19.0 <3.19.2"],"fixed":["3.19.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}