CVE-2026-101027
When `[migrations] ALLOWED_DOMAINS` was configured, a hostname matching the allow list was accepted…
- Risk score
- 47/100
- CVSS
- 7.7 v3.1
- Exploit chance (30 days)
- 0.2%
- Published
- 6 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 an…
- Affected
- Gitea
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.7 high
References
Original 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.
Last activity 6 Oct 2026. Patch Forecast updates every hour.