Critical severity · published Oct 6, 2026
CVE-2026-101023
Gitea OAuth2 refresh token grant accepts access tokens
9.1
CVSS
0.4%
EPSS
No
On KEV
Description
Gitea's OAuth2 token endpoint verified the signature and grant of a token submitted with the `refresh_token` grant type, but not that the token was a refresh token. An unexpired access token for the same OAuth2 application and grant could be exchanged for a new access token and refresh token. Whoever holds such an access token could keep access beyond the token's original lifetime.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
Gitea · Gitea
through 28.0.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-101023
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-101023
vendor-advisory
https://github.com/go-gitea/gitea/security/advisories/GHSA-469m-x4mw-38r3
patch
https://github.com/go-gitea/gitea/pull/39501
patch
https://github.com/go-gitea/gitea/pull/39507
release-notes
https://blog.gitea.com/release-of-28.1.0/
release-notes
https://github.com/go-gitea/gitea/releases/tag/v28.1.0
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