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.
Published: 2026-10-06
Score: n/a
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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History

Tue, 06 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
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.
Title Gitea migration SSRF through ALLOWED_DOMAINS address check bypass
References

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: Gitea

Published:

Updated: 2026-10-06T19:23:20.387Z

Reserved: 2026-10-04T21:57:35.568Z

Link: CVE-2026-101027

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-06T20:17:08.233

Modified: 2026-10-06T20:17:08.233

Link: CVE-2026-101027

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses

No weakness.