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: 7.7 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 07 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-346
CWE-918

Wed, 07 Oct 2026 14:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-918

Wed, 07 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 07 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
First Time appeared Gitea
Gitea gitea
Vendors & Products Gitea
Gitea gitea

Tue, 06 Oct 2026 22:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-918

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

cve-icon MITRE

Status: PUBLISHED

Assigner: Gitea

Published:

Updated: 2026-10-07T15:54:52.293Z

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

Link: CVE-2026-101027

cve-icon Vulnrichment

Updated: 2026-10-07T11:37:34.067Z

cve-icon NVD

Status : Awaiting Analysis

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

Modified: 2026-10-07T16:17:31.953

Link: CVE-2026-101027

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-07T17:30:17Z

Weaknesses
  • CWE-346

    Origin Validation Error

  • CWE-918

    Server-Side Request Forgery (SSRF)