CVE-2026-23603

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

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 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: Server-Side Request Forgery (SSRF)

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...

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

Summary When oauth2client UPDATEAVATAR = true is enabled, Gitea fetches the avatar URL received from an OAuth2/OIDC provider using Go's default HTTP client. The URL comes from the user's OAuth/OIDC avatar value, commonly the OIDC picture claim. The affected code path calls http.Geturl without...

CVE-2026-56398: Improper Input Validation

Open WebUI before 0.9.5 contains a stored cross-site scripting vulnerability in the OAuth authentication flow where the picture claim URL MIME type is inferred from file extension rather than Content-Type header, allowing SVG files to bypass the profile image validator and be stored as data URIs...

PT-2026-41173

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.0 Description A Server-Side Request Forgery SSRF issue exists in the process picture url function within backend/open webui/utils/oauth.py. The function fetches URLs from OAuth picture claims without using the...

Vikjuna Bypasses Webhook SSRF Protections During OpenID Connect Avatar Download

Summary The DownloadImage function in pkg/utils/avatar.go uses a bare http.Client with no SSRF protection when downloading user avatar images from the OpenID Connect picture claim URL. An attacker who controls their OIDC profile picture URL can force the Vikunja server to make HTTP GET requests t...