CVE-2026-101027
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Gitea | Gitea | 0 <= 1.27.3 | affected |
Weaknesses
References
- https://github.com/go-gitea/gitea/security/advisories/GHSA-fqjr-23c8-gg9m
- https://github.com/go-gitea/gitea/pull/39426
- https://blog.gitea.com/release-of-28.0.0/
- https://github.com/go-gitea/gitea/releases/tag/v28.0.0
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