CVE-2026-33679
Vikunja has SSRF via OpenID Connect Avatar Download that Bypasses Webhook SSRF Protections
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-918 |
| Vendor | go-vikunja |
| Product | vikunja |
| Published | Mar 24, 2026 |
| Last Updated | Mar 24, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
Low
Affected Versions
go-vikunja / vikunja
< 2.2.1