Command injection in gogs - CVE-2026-52806
Published: June 19, 2026
Vulnerability identifier: #VU134904
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-52806
CWE-ID: CWE-77
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: gogs.io
Affected software:
gogs
gogs
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary code on the server.
The vulnerability exists due to command injection in the pull request merge rebase operation when processing a specially crafted pull request base branch name during a rebase-before-merging action. A remote user can create a pull request with a branch name that injects the --exec option into git rebase to execute arbitrary code on the server.
Exploitation requires the rebase-before-merging option to be enabled for the repository.
How to mitigate CVE-2026-52806
Install security update from vendor's website.