CVEvulnerability
CVE-2026-101027
7.7 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-10-06
- Last modified
- 2026-10-15
- Assigner
- 88ee5874-cf24-4952-aea0-31affedb7ff2
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.7 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
- Weaknesses
- CWE-346
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.
Affected configurations
• gitea gitea (< 28.0.0)
Related
Weakness · CWE (1)
- CWE-346 Origin Validation Error weakness
References
- 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 Mitigation, Vendor Advisory