CVE-2026-123526 Vikunja before 2.7.1 Mass Assignment via Team external_id Field
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-123526?
CVE-2026-123526 is a medium-severity vulnerability in go-vikunja vikunja, published on 8 Nov 2026.
Official description
Vikunja before 2.7.1 contains a mass assignment vulnerability that allows any authenticated user to set the read-only external_id field through the team create and update endpoints. Attackers can tag a team they create or administer as externally managed, permanently blocking removal of every member and causing SSO members to be dropped from the team at their next login.
Weakness: CWE-915
Which versions are affected by CVE-2026-123526?
How do I fix CVE-2026-123526?
No fix has been published for CVE-2026-123526 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-123526 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-123526 exists.
Sources
Also known as GHSA-cg54-92gp-5457, GHSA-fjrf-gjmg-9v6g.