{"id":"BIT-gitea-2026-101027","summary":"Gitea migration SSRF through ALLOWED_DOMAINS address check bypass","details":"When `[migrations] ALLOWED_DOMAINS` was configured, a hostname matching the allow list was accepted without checking its resolved address against the local-network restrictions. A user who can start repository migrations and control the DNS of an allowed hostname could make it resolve to loopback or private addresses and bypass `ALLOW_LOCALNETWORKS = false`, reaching internal services from the Gitea server. Instances without `ALLOWED_DOMAINS` configured are not affected by this specific bypass.","aliases":["CVE-2026-101027","GHSA-fqjr-23c8-gg9m"],"modified":"2026-10-16T09:55:54.250189082Z","published":"2026-10-16T08:36:27.105Z","database_specific":{"cpes":["cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*"],"severity":"High"},"references":[{"type":"ARTICLE","url":"https://blog.gitea.com/release-of-28.0.0/"},{"type":"FIX","url":"https://github.com/go-gitea/gitea/pull/39426"},{"type":"ARTICLE","url":"https://github.com/go-gitea/gitea/releases/tag/v28.0.0"},{"type":"ADVISORY","url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-fqjr-23c8-gg9m"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101027"}],"affected":[{"package":{"name":"gitea","ecosystem":"Bitnami","purl":"pkg:bitnami/gitea"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"28.0.0"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/gitea/BIT-gitea-2026-101027.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"}]}],"schema_version":"1.9.0"}