CVE-2026-123493 Vikunja from 2.4.0 before 2.7.1 Authentication Bypass via Bot API Tokens
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-123493?
CVE-2026-123493 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 authentication bypass vulnerability that allows disabled or locked users to retain access through API tokens owned by their bot users. Because token validation only checks the bot's own status, attackers holding pre-minted bot tokens can keep reading and modifying shared projects via the HTTP API, CalDAV, MCP and feeds.
Weakness: CWE-613
Which versions are affected by CVE-2026-123493?
How do I fix CVE-2026-123493?
No fix has been published for CVE-2026-123493 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-123493 being exploited?
There is no known exploitation of CVE-2026-123493 in the wild and no public exploit code.
Sources
Also known as GHSA-5fc2-w2j4-6r8w, GHSA-9j2r-8c48-g92c.