CVE-2026-33679
Vikunja has SSRF via OpenID Connect Avatar Download that Bypasses Webhook SSRF Protections
HIGH 7.4EPSS 0.5%
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 OIDC profile picture URL can force the Vikunja server to make HTTP GET requests to arbitrary internal or cloud metadata endpoints. This bypasses the SSRF protections that are correctly applied to the webhook system. Version 2.2.1 patches the issue.
- Affected
- go-vikunja · vikunja
- CVSS v3.1 NVD
- 7.4 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L - CVSS v3.1 GITHUB
- 6.4 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:L - EPSS
- 0.45% chance of exploitation in the next 30 days, 38th percentile
- Published
- 2026-03-24
Proof-of-concept exploits (1)
Security advisories
- go-vikunja/vikunja/security/advisories/GHSA-g9xj-752q-xh63
- go-vikunja/vikunja/commit/363aa6642352b08fc8bc6aaff2f3a550393af1cf
- https://vikunja.io/changelog/vikunja-v2.2.2-was-released