Medium severity · published Mar 24, 2026
CVE-2026-33313
Vikunja has an IDOR in Task Comments Allows Reading Arbitrary Comments
4.3
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VI
vikunja · go-vikunja
< 2.2.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33313
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33313
Patch
https://github.com/go-vikunja/vikunja/commit/bc6d843ed4df82a6c89f10aa676a7a33d27bf2fd
Vendor Advisory
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-mr3j-p26x-72x4
Release Notes
https://vikunja.io/changelog/vikunja-v2.2.0-was-released
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