CVE-2026-123506 Vikunja 2.2.0 before 2.7.1 Token Scope Bypass via Project Webhook Endpoints
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-123506?
CVE-2026-123506 is a medium-severity vulnerability in go-vikunja vikunja, published on 8 Nov 2026.
Official description
Vikunja from 2.2.0 before 2.7.1 contains an authorization bypass vulnerability that allows holders of tokens scoped only to projects_webhooks to manage the owner's user-level webhooks by supplying user_id in request bodies. Attackers can register user webhooks to their own receiver to obtain reminders and task payloads from all owner projects, and read, change or delete existing user webhooks.
Weakness: CWE-863
Which versions are affected by CVE-2026-123506?
How do I fix CVE-2026-123506?
No fix has been published for CVE-2026-123506 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-123506 being exploited?
There is no known exploitation of CVE-2026-123506 in the wild and no public exploit code.
Sources
Also known as GHSA-2fc5-hwxx-39f7, GHSA-5f6v-j6xm-wwj9.