{"id":"CVE-2026-104636","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-104636","generatedAt":"2026-10-28T01:01:36.580Z","title":"Gitea validated the initial remote URL for push mirrors, wiki remote checks, and fetches of migrated pull request heads, but the subsequent raw Git operations followed HTTP redirects without revalidating the destination.","description":"Gitea validated the initial remote URL for push mirrors, wiki remote checks, and fetches of migrated pull request heads, but the subsequent raw Git operations followed HTTP redirects without revalidating the destination. A repository administrator using a policy-allowed endpoint that redirects could make Gitea's Git client send requests to an address that the outbound host policy would otherwise block. The impact depends on the configured policy and the internal services reachable from the server.","published":"2026-10-06T20:17:15.000Z","lastModified":"2026-10-13T17:18:49.000Z","status":"Analyzed","sourceIdentifier":"88ee5874-cf24-4952-aea0-31affedb7ff2","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-918"],"affected":["gitea/gitea"],"epss":{"score":0.00256,"percentile":0.17067,"date":"2026-10-26","history":[{"date":"2026-10-07","score":0.00148,"percentile":0.03493}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-07T22:30:11.000Z","detail":{"from":null,"score":"7.5","severity":"HIGH","fromSeverity":null},"summary":"Now scored CVSS 7.5 HIGH."},{"kind":"new","label":"New CVE","at":"2026-10-06T20:17:15.000Z","detail":{"score":null,"severity":null,"publishedAt":"2026-10-06T20:17:15.343Z"},"summary":"New CVE, high severity (CVSS 7.5)."}],"references":[{"url":"https://blog.gitea.com/release-of-28.0.0/","tags":["Release Notes"],"source":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/pull/39426","tags":["Patch"],"source":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/releases/tag/v28.0.0","tags":["Release Notes"],"source":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-g4hw-fg4c-89mq","tags":["Mitigation","Vendor Advisory"],"source":"88ee5874-cf24-4952-aea0-31affedb7ff2"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-104636","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}