CVE-2026-33679
March 24, 2026
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 Packages
github.com/go-vikunja/vikunja (GO):
Affected version(s) >=v0.1 <v2.2.1Fix Suggestion:
Update to version v2.2.1code.vikunja.io/api (GO):
Affected version(s) >=v0.13.1 <v2.2.1Fix Suggestion:
Update to version v2.2.1github.com/go-vikunja/vikunja (GO):
Affected version(s) >=v0.1 <v2.2.1Fix Suggestion:
Update to version v2.2.1code.vikunja.io/api (GO):
Affected version(s) >=v0.13.1 <v2.2.1Fix Suggestion:
Update to version v2.2.1github.com/go-vikunja/vikunja (GO):
Affected version(s) >=v0.1 <v2.2.1Fix Suggestion:
Update to version v2.2.1code.vikunja.io/api (GO):
Affected version(s) >=v0.13.1 <v2.2.1Fix Suggestion:
Update to version v2.2.1Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
LOW
Subsequent System Integrity
NONE
Subsequent System Availability
LOW
CVSS v3
Base Score:
6.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Server-Side Request Forgery (SSRF)
EPSS
Base Score:
0.03
