SSRF in Go-Vikunja Vikunja
CVE-2026-33679
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:L.
EPSS exploit prediction
EPSS: 0.005 (36.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001
Affected products
- Go-Vikunja Vikunja — versions < 2.2.1
- Vikunja
Weakness classification (CWE)
References
- github.com/go-vikunja/vikunja/security/advisories/GHSA-g9xj-752q-xh63 (Exploit, Vendor Advisory)
- github.com/go-vikunja/vikunja/commit/363aa6642352b08fc8bc6aaff2f3a550393af1cf (Patch)
- vikunja.io/changelog/vikunja-v2.2.2-was-released (Release Notes)
Frequently asked questions
- What is CVE-2026-33679?
- CVE-2026-33679 is a medium-severity vulnerability in Go-Vikunja Vikunja, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.4/10. Published 2026-03-24.
- How severe is CVE-2026-33679?
- Medium severity. CVSS v3 base score is 6.4 out of 10.