Remote Code Execution Vulnerability in Gitea for Git Repository Management
CVE-2026-89430

8.1HIGH

Key Information:

Vendor

Gitea

Status
Gitea
Vendor
CVE Published:
6 October 2026

What is CVE-2026-89430?

Gitea has a vulnerability that permits users with administrative access to a repository to exploit push mirror synchronization features. The remote address for push mirrors is only validated during the creation of the mirror; subsequent synchronizations use the stored address without re-validation. If the address resolves to a blocked or internal service later, an unauthorized user may manipulate the sync process to push repository contents indiscriminately to internal Git services, posing significant risks of data leakage or manipulation.

Affected Version(s)

Gitea 0 <= 1.27.3

References

https://github.com/go-gitea/gitea/security/advisories/GHS...
vendor-advisory
https://github.com/go-gitea/gitea/pull/39010
patch
https://github.com/go-gitea/gitea/pull/39426
patch

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

https://github.com/thesmartshadow
https://github.com/manus-use
https://github.com/cy3erm
https://github.com/TheFox0x7
https://github.com/silverwind
https://github.com/bircni
https://github.com/wxiaoguang
.