CVE-2026-101029

Gitea migration and pull mirror SSRF through multi-answer DNS

State: Published
Severity: 4.3 Medium
Published: Oct 6, 2026
Updated: Oct 7, 2026
Reserved: Oct 4, 2026

Description

Gitea's repository migration and pull mirror egress checks could be bypassed with a hostname that returns multiple DNS answers, because the address that was validated was not necessarily the address Git later connected to. A low-privileged user who can create migrations or mirrors could direct the server to internal services, reading from and writing to reachable internal Git or HTTP endpoints. Content from internal responses could additionally be disclosed through migration and mirror error messages.

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	CISA-ADP

Weaknesses

CWE-209 Generation of Error Message Containing Sensitive Information
CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
GiteaGitea	1.27.3 and earlierAffected

References

GitHub Security Advisory GHSA-6g2h-xpg3-rm48vendor-advisory
Fix: go-gitea/gitea pull request #39010patch
Fix: go-gitea/gitea pull request #39426patch
Gitea 28.0.0 release announcementrelease-notes
go-gitea/gitea v28.0.0 releaserelease-notes

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