Path traversal in gogs - CVE-2026-52797
Published: June 3, 2026
Vulnerability identifier: #VU133268
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-52797
CWE-ID: CWE-22
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 cause a denial of service.
The vulnerability exists due to path traversal in the POST /:user/:repo/_preview/:branch/:path_to_file endpoint when processing a user-controlled path passed to the git diff command. A remote user can supply a crafted path using the --output option to overwrite critical files and cause a denial of service.
The issue requires an authorized user account and can be used to overwrite files such as the database or configuration file.
How to mitigate CVE-2026-52797
Install security update from vendor's website.