CVE-2026-101027

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.

CVSS v3 7.7 HIGH

7.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.1 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
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

Configurations

Configuration 1 (hide)

cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*

History

15 Oct 2026, 02:32

Type	Values Removed	Values Added
CPE		cpe:2.3:a:gitea:gitea::::::::
First Time		Gitea gitea Gitea
References	~~() https://blog.gitea.com/release-of-28.0.0/ -~~	() https://blog.gitea.com/release-of-28.0.0/ - Release Notes
References	~~() https://github.com/go-gitea/gitea/pull/39426 -~~	() https://github.com/go-gitea/gitea/pull/39426 - Patch
References	~~() https://github.com/go-gitea/gitea/releases/tag/v28.0.0 -~~	() https://github.com/go-gitea/gitea/releases/tag/v28.0.0 - Release Notes
References	~~() https://github.com/go-gitea/gitea/security/advisories/GHSA-fqjr-23c8-gg9m -~~	() https://github.com/go-gitea/gitea/security/advisories/GHSA-fqjr-23c8-gg9m - Mitigation, Vendor Advisory

07 Oct 2026, 16:17

Type	Values Removed	Values Added
CWE		CWE-346

07 Oct 2026, 12:17

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.7

06 Oct 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-06 20:17

Updated : 2026-10-15 02:32

NVD link : CVE-2026-101027

Mitre link : CVE-2026-101027

CVE.ORG link : CVE-2026-101027

JSON object : View

Products Affected

gitea

gitea

CWE

CWE-346

Origin Validation Error

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