CVE-2026-101027: Gitea

High severity, CVSS 7.7. EPSS: 0.2% chance of exploitation in the next 30 days.

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 products

• Gitea Gitea: up to and including 1.27.3

Published 2026-10-06. Last modified 2026-10-07.