Gitea's OAuth2 and OpenID Connect sign-in paths do not require a WebAuthn challenge when WebAuthn is the account's only configured second factor. A party able to authenticate through the affected external identity flow can obtain a full session without the passkey verification enforced during password login. One affected path can also persist an external identity link, extending the compromise beyond the initial session; accounts with TOTP configured are outside the reported WebAuthn-only scenario.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Gitea Gitea
cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*
|
1.16.0
|
1.27.2
|
References 5
https://blog.gitea.com/release-of-1.27.2/
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https://github.com/go-gitea/gitea/pull/38805
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https://github.com/go-gitea/gitea/pull/38810
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https://github.com/go-gitea/gitea/releases/tag/v1.27.2
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https://github.com/go-gitea/gitea/security/advisories/GHSA-92j2-6qcg-c28c
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