CVE-2026-33679 Vikunja has SSRF via OpenID Connect Avatar Download that Bypasses Webhook SSRF Protections

Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.1, 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...