CVE-2026-103059

critical · 9.1

When Gitea's built-in SSH server is enabled (`START_SSH_SERVER = true`), the presented public key was looked up with an SQL `LIKE` comparison of its encoded content, which is case-insensitive on some databases, including the default SQLite. An attacker who can construct a case variant of another user's registered RSA public key for which they can derive the private key could have that key matched to the victim's account and authenticate over SSH as that user. Keys are now looked up by fingerprint.

9.1

CVSS

0.4%

EPSS (exploit prob.)

33rd

EPSS percentile

2026-10-06

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weaknesses

CWE-305

Affected products

Vendor	Product	Affected versions
gitea	gitea	< 28.0.0

Check a specific version with /api/v1/cve/match.

References

https://blog.gitea.com/release-of-28.0.0/
https://github.com/go-gitea/gitea/pull/39423
https://github.com/go-gitea/gitea/releases/tag/v28.0.0
https://github.com/go-gitea/gitea/security/advisories/GHSA-8pwg-hcgm-54cp

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-103059