CVE-2026-123520

Vikunja from 0.18.0 before 2.7.1 contains a privilege escalation vulnerability that allows team owners to gain admin or ownership of read-only shared projects by deleting accounts. Attackers can create a bot, add it to their team, and delete it through the bots endpoint, triggering ensureProjectAdminUser to promote read-only shares and lock out the real owner.

Referanslar

• https://github.com/go-vikunja/vikunja/security/advisories/GHSA-hq66-9qg8-jwqg
• https://www.vulncheck.com/advisories/vikunja-0.18.0-before-2.7.1-privilege-escalation-via-account-deletion