{"schema_version":"1.9.0","id":"BIT-varnish-2021-36740","published":"2024-03-06T11:08:33.796Z","modified":"2026-09-08T08:48:21.190079047Z","aliases":["CVE-2021-36740"],"details":"Varnish Cache, with HTTP/2 enabled, allows request smuggling and VCL authorization bypass via a large Content-Length header for a POST request. This affects Varnish Enterprise 6.0.x before 6.0.8r3, and Varnish Cache 5.x and 6.x before 6.5.2, 6.6.x before 6.6.1, and 6.0 LTS before 6.0.8.","affected":[{"package":{"name":"varnish","ecosystem":"Bitnami","purl":"pkg:bitnami/varnish"},"ranges":[{"type":"SEMVER","events":[{"introduced":"5.0.0"},{"fixed":"5.2.2"},{"introduced":"6.1.0"},{"fixed":"6.6.1"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/varnish/BIT-varnish-2021-36740.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"}]}],"references":[{"type":"ADVISORY","url":"https://docs.varnish-software.com/security/VSV00007/"},{"type":"ADVISORY","url":"https://github.com/varnishcache/varnish-cache/commit/82b0a629f60136e76112c6f2c6372cce77b683be"},{"type":"ADVISORY","url":"https://github.com/varnishcache/varnish-cache/commit/9be22198e258d0e7a5c41f4291792214a29405cf"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/THV2DQA2GS65HUCKK4KSD2XLN3AAQ2V5/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZHBNLDEOTGYRIEQZBWV7F6VPYS4O2AAK/"},{"type":"ADVISORY","url":"https://varnish-cache.org/security/VSV00007.html"},{"type":"ADVISORY","url":"https://www.debian.org/security/2022/dsa-5088"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-36740"}],"database_specific":{"cpes":["cpe:2.3:a:varnish_cache_project:varnish_cache:*:*:*:*:*:*:*:*"],"severity":"Medium"}}