{"id":"CVE-2021-29258","details":"An issue was discovered in Envoy 1.14.0. There is a remotely exploitable crash for HTTP2 Metadata, because an empty METADATA map triggers a Reachable Assertion.","aliases":["BIT-envoy-2021-29258"],"modified":"2026-08-07T17:28:03.867162Z","published":"2021-05-20T17:15:07.740Z","related":["GHSA-rqvq-hxw5-776j","GHSA-xw4q-6pj2-5gfg"],"references":[{"type":"ADVISORY","url":"https://blog.envoyproxy.io"},{"type":"ADVISORY","url":"https://github.com/envoyproxy/envoy/releases/tag/v1.14.0"},{"type":"ADVISORY","url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-rqvq-hxw5-776j"},{"type":"ADVISORY","url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfg"},{"type":"FIX","url":"https://github.com/envoyproxy/envoy-setec/pull/230"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/envoyproxy/envoy","events":[{"introduced":"ca0d61134a84ce644c7f46549a06a99579fb97c0"},{"last_affected":"d6a4496e712d7a2335b26e2f76210d5904002c26"},{"fixed":"de12027c9c2de685d85cf1bf0db58280ac06d0a3"}],"database_specific":{"source":["CPE_STRING","REFERENCES"],"cpe":["cpe:2.3:a:envoyproxy:envoy:1.14.6:*:*:*:*:*:*:*","cpe:2.3:a:envoyproxy:envoy:1.15.3:*:*:*:*:*:*:*","cpe:2.3:a:envoyproxy:envoy:1.16.2:*:*:*:*:*:*:*","cpe:2.3:a:envoyproxy:envoy:1.17.1:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"1.14.6"},{"last_affected":"1.14.6"},{"introduced":"1.15.3"},{"last_affected":"1.15.3"},{"introduced":"1.16.2"},{"last_affected":"1.16.2"},{"introduced":"1.17.1"},{"last_affected":"1.17.1"}]}}],"versions":["1.14.6","1.15.3","1.16.2","1.17.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-29258.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}