{"id":"CVE-2026-20896","revision":"71211fd6aaa24f6c9b93d12723497a48","records":[{"revision":"71211fd6aaa24f6c9b93d12723497a48","observedAt":"2026-10-25T05:17:25.909+00:00","statement":{"source":"nvd","id":"CVE-2026-20896","aliases":[],"title":"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.","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":"2026-07-03T21:16:56.66+00:00","modifiedAt":"2026-07-07T18:16:35.38+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · 88ee5874-cf24-4952-aea0-31affedb7ff2 · Secondary","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://blog.gitea.com/release-of-1.26.3-and-1.26.4/","https://github.com/go-gitea/gitea/pull/38151","https://github.com/go-gitea/gitea/releases/tag/v1.26.3","https://github.com/go-gitea/gitea/security/advisories/GHSA-f75j-4cw6-rmx4"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-20896","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-284"],"productCriteria":[],"sourceDates":{"published":"2026-07-03T21:16:56.660","lastModified":"2026-07-07T18:16:35.380"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-20896","identifiers":["CVE-2026-20896"]},"retained":false,"historicalAffected":[]}],"coverage":[]}