Vulnerability Description
A mass assignment vulnerability exists in MISP’s sharing group creation endpoint. When creating a new sharing group, the controller did not remove a user-supplied id field before saving the submitted data. In CakePHP, supplying a primary key in the save data can cause a create() followed by save() operation to update an existing record instead of creating a new one. An authenticated user with permission to add sharing groups could therefore submit the identifier of an existing sharing group and modify that sharing group without passing the normal edit access-control checks. This may allow the attacker to take over or alter sharing groups they do not otherwise have access to, potentially affecting the confidentiality and integrity of information shared through those groups. Affected component: app/Controller/SharingGroupsController.php, add() action
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-54360?
CVE-2026-54360 is a documented vulnerability. A mass assignment vulnerability exists in MISP’s sharing group creation endpoint. When creating a new sharing group, the controller did not remove a user-supplied id field before saving the submitted ...
How severe is CVE-2026-54360?
CVSS scoring is not yet available for CVE-2026-54360. Check NVD for updates.
Is there a patch for CVE-2026-54360?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.