CVE-2026-104627 (GCVE-0-2026-104627)

Vulnerability from cvelistv5 – Published: 2026-10-18 18:51 – Updated: 2026-10-19 20:20
VLAI
Title
Gitea OpenID account linking without session binding
Summary
The Gitea OpenID association callback in the security settings accepted a positive OpenID 2.0 assertion without checking that the signed-in user had started the linking. Because OpenID 2.0 allows unsolicited assertions, an attacker-controlled OpenID provider could attach the attacker's identity to the account of a signed-in victim who opened a crafted link, and the attacker could then sign in as the victim through OpenID login, which does not apply the local TOTP or WebAuthn checks. The callback now requires a time-limited `state` value bound to the user.
Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 20:20 UTC
CWE
  • CWE-287 - Improper Authentication
  • CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
Gitea CNA under the mitre root
CNA scorecard C 61/100 over 165 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Gitea Gitea Affected: 0 , ≤ 28.1.0 (semver)
guessed Create a notification for this product.
Credits
https://github.com/cyberlanc3r https://github.com/u2usvc https://github.com/wxiaoguang
Show details on NVD website
To clipboard 

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          "url": "https://blog.gitea.com/release-of-28.2.0/"
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          }
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}



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