CVE-2026-123527 Vikunja 2.4.0 before 2.7.1 API Token Scope Collision Authorization Bypass
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-123527?
CVE-2026-123527 is a medium-severity vulnerability in go-vikunja vikunja, published on 8 Nov 2026.
Official description
Vikunja from 2.4.0 before 2.7.1 contains an authorization bypass vulnerability that allows token holders to perform unintended operations due to colliding v1 and v2 API token permission keys. Attackers with a token scoped to read project backgrounds can delete them via the v2 DELETE background route, and bucket create-only tokens can update existing buckets.
Weakness: CWE-863
Which versions are affected by CVE-2026-123527?
How do I fix CVE-2026-123527?
No fix has been published for CVE-2026-123527 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-123527 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-123527 exists.
Sources
Also known as GHSA-j5v7-qcwp-5g32, GHSA-w4rp-qjww-56rf.