Vulnerability Description
Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.2, the `LinkSharing.ReadAll()` method allows link share authenticated users to list all link shares for a project, including their secret hashes. While `LinkSharing.CanRead()` correctly blocks link share users from reading individual shares via `ReadOne`, the `ReadAllWeb` handler bypasses this check by never calling `CanRead()`. An attacker with a read-only link share can retrieve hashes for write or admin link shares on the same project and authenticate with them, escalating to full admin access. Version 2.2.2 patches the issue.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Vikunja | Vikunja | < 2.2.2 |
Related Weaknesses (CWE)
References
- https://github.com/go-vikunja/vikunja/commit/9efe1fadba817923c7c7f5953c3e9e9c568Patch
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8hp8-9fhr-pfm9ExploitVendor Advisory
- https://vikunja.io/changelog/vikunja-v2.2.2-was-releasedRelease Notes
FAQ
What is CVE-2026-33680?
CVE-2026-33680 is a vulnerability with a CVSS score of 7.5 (HIGH). Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.2, the `LinkSharing.ReadAll()` method allows link share authenticated users to list all link shares for a project, ...
How severe is CVE-2026-33680?
CVE-2026-33680 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33680?
Check the references section above for vendor advisories and patch information. Affected products include: Vikunja Vikunja.