Gitea migration SSRF to reserved addresses through ALLOWED_DOMAINS
Summary
| CVE | CVE-2026-96400 |
|---|---|
| State | PUBLISHED |
| Assigner | Gitea |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-06 20:17:35 UTC |
| Updated | 2026-10-06 20:17:35 UTC |
| Description | With `[migrations] ALLOWED_DOMAINS` set to a matching entry such as `*` or a hostname wildcard, Gitea's migration URL validation could permit reserved and link-local addresses, such as `169.254.169.254`, even when `ALLOW_LOCALNETWORKS = false`. The local-network block list did not cover these ranges, and a hostname matching the allow list was accepted regardless of its resolved address. A user who can start migrations on such an instance could reach these addresses from the Gitea server; the default empty `ALLOWED_DOMAINS` configuration is not affected. |
Risk And Classification
Problem Types: CWE-918 | CWE-918 CWE-918: Server-Side Request Forgery (SSRF)
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/go-gitea/gitea/releases/tag/v28.0.0 | 88ee5874-cf24-4952-aea0-31affedb7ff2 | github.com | |
| github.com/go-gitea/gitea/security/advisories/GHSA-54w9-6cc5-9wj9 | 88ee5874-cf24-4952-aea0-31affedb7ff2 | github.com | |
| github.com/go-gitea/gitea/pull/39426 | 88ee5874-cf24-4952-aea0-31affedb7ff2 | github.com | |
| blog.gitea.com/release-of-28.0.0 | 88ee5874-cf24-4952-aea0-31affedb7ff2 | blog.gitea.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: https://github.com/ihopenre-eng (en)
CNA: https://github.com/TheFox0x7 (en)
CNA: https://github.com/silverwind (en)
CNA: https://github.com/bircni (en)
CNA: https://github.com/wxiaoguang (en)
There are currently no legacy QID mappings associated with this CVE.