{"id":"CVE-2026-20896","revision":"6905864828a3494b89f66944c8654004","records":[{"revision":"6905864828a3494b89f66944c8654004","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-20896","aliases":[],"title":"Gitea Docker image trusts spoofable reverse-proxy headers by default","description":"Gitea Docker image versions up to and including 1.26.2 use REVERSE_PROXY_TRUSTED_PROXIES=* by default, allowing any source IP to impersonate a user when reverse-proxy authentication headers such as X-WEBAUTH-USER are enabled.","state":0,"publishedAt":"2026-07-03T20:19:29.588+00:00","modifiedAt":"2026-07-07T17:00:46.549+00:00","affected":[{"ecosystem":"Vendor product","name":"Gitea Open Source Git Server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"product\": \"Gitea Open Source Git Server\",\n                    \"vendor\": \"Gitea\",\n                    \"versions\": [\n                        {\n                            \"lessThanOrEqual\": \"1.26.2\",\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://github.com/go-gitea/gitea/security/advisories/GHSA-f75j-4cw6-rmx4","https://github.com/go-gitea/gitea/pull/38151","https://github.com/go-gitea/gitea/releases/tag/v1.26.3","https://blog.gitea.com/release-of-1.26.3-and-1.26.4/"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-20896","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-20896","identifiers":["CVE-2026-20896"]},"retained":false,"historicalAffected":[]}],"coverage":[]}