CVE-2026-101027

Description

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.

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Produits concernés

• Gitea
• Gitea gitea

Scores CVSS

Faiblesses (CWE)

• CWE-346

Références

• https://blog.gitea.com/release-of-28.0.0/ Release Notes
• https://github.com/go-gitea/gitea/pull/39426 Patch
• https://github.com/go-gitea/gitea/releases/tag/v28.0.0 Release Notes
• https://github.com/go-gitea/gitea/security/advisories/GHSA-fqjr-23c8-gg9m MitigationVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories