CVE-2026-101023 Gitea - Authentication Bypass

Gitea contains an OAuth2 token endpoint vulnerability caused by improper validation of token type in refresh_token grant, letting attackers with access tokens extend access beyond original lifetime, exploit requires valid access token.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.35% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
6 October 2026
Updated
15 October 2026
Weakness
CWE-287

Vendor fix

Update to the latest version with proper token type validation in OAuth2 token endpoint.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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