OAuth2 Authorization Flaws in Gitea Affecting Multiple Versions
CVE-2026-26232

9.1CRITICAL

Key Information:

Vendor

Gitea

Status
Gitea Open Source Git Server
Vendor
CVE Published:
3 July 2026

What is CVE-2026-26232?

Gitea versions prior to 1.25.5 exhibit inconsistencies in enforcing the expiry and single-use constraints of OAuth2 authorization codes during token exchanges. This vulnerability could potentially allow for unauthorized access and misuse of tokens that should be time-limited and used only once. Users are encouraged to upgrade to Gitea 1.25.5 or later to mitigate these security concerns.

Affected Version(s)

Gitea Open Source Git Server 0 < 1.25.5

References

https://github.com/go-gitea/gitea/pull/36797
patch
https://github.com/go-gitea/gitea/pull/36851
patch
https://github.com/go-gitea/gitea/releases/tag/v1.25.5
release-notes

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

sammiee5311
.