CVE-2026-103059

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.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://blog.gitea.com/release-of-28.0.0/	Release Notes
https://github.com/go-gitea/gitea/pull/39423	Patch Issue Tracking
https://github.com/go-gitea/gitea/releases/tag/v28.0.0	Release Notes
https://github.com/go-gitea/gitea/security/advisories/GHSA-8pwg-hcgm-54cp	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*

History

15 Oct 2026, 02:26

Type	Values Removed	Values Added
CPE		cpe:2.3:a:gitea:gitea::::::::
First Time		Gitea gitea Gitea
References	~~() https://blog.gitea.com/release-of-28.0.0/ -~~	() https://blog.gitea.com/release-of-28.0.0/ - Release Notes
References	~~() https://github.com/go-gitea/gitea/pull/39423 -~~	() https://github.com/go-gitea/gitea/pull/39423 - Patch, Issue Tracking
References	~~() https://github.com/go-gitea/gitea/releases/tag/v28.0.0 -~~	() https://github.com/go-gitea/gitea/releases/tag/v28.0.0 - Release Notes
References	~~() https://github.com/go-gitea/gitea/security/advisories/GHSA-8pwg-hcgm-54cp -~~	() https://github.com/go-gitea/gitea/security/advisories/GHSA-8pwg-hcgm-54cp - Vendor Advisory

07 Oct 2026, 15:16

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.1
CWE		CWE-305

06 Oct 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-06 20:17

Updated : 2026-10-15 02:26

NVD link : CVE-2026-103059

Mitre link : CVE-2026-103059

CVE.ORG link : CVE-2026-103059

JSON object : View

Products Affected

gitea

gitea

CWE

CWE-305

Authentication Bypass by Primary Weakness

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