{"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":"2026-05-16T04:03:03.871938067Z","published":"2021-05-20T17:15:07.740Z","related":["GHSA-rqvq-hxw5-776j","GHSA-xw4q-6pj2-5gfg"],"database_specific":{},"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"}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}