CVE-2026-23603 Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim

Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim...

CVE-2026-23603

The Gitea software is vulnerable to a Blind Server-Side Request Forgery (SSRF) during the OAuth2 avatar synchronization process. The root cause is an unvalidated OIDC picture claim within the gitea.dev component. This vulnerability allows an attacker to potentially trigger server-side requests to...

CVE-2026-23603 Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim

Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim...

EUVD-2026-58134

Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim...

GO-2026-6083 Gitea: Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim in gitea.dev

Gitea: Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim in gitea.dev...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the oauth2UpdateAvatarIfNeed function. An attacker can cause the server to make arbitrary outbound HTTP GET requests by supplying a crafted avatar URL through the OAuth2/OIDC picture claim. This can...