Vulnerability · Published Mar 24, 2026 · Assigned by GitHub_M
CVE-2026-33313Vikunja has an IDOR in Task Comments Allows Reading Arbitrary Comments
Medium 5.3
In plain English
A medium-severity authorization bypass via user-controlled key in vikunja from go-vikunja. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).
Official description
Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.0, an authenticated user can read any task comment by ID, regardless of whether they have access to the task the comment belongs to, by substituting the task ID in the API URL with a task they do have access to. Version 2.2.0 fixes the issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | code.vikunja.io/api | no fix listed | GHSA-mr3j-p26x-72x4 |
| Go | code.vikunja.io/api | no fix listed | GO-2026-4797 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| go-vikunja | vikunja | < 2.2.0 |
Weakness: CWE-639 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N