Vulnerability Description
Pagekit CMS 1.0.18 contains a privilege escalation vulnerability that allows authenticated users with the 'user: manage users' permission to escalate privileges by assigning arbitrary custom roles to themselves due to missing authorization checks in UserApiController::saveAction(). Attackers can assign themselves a custom role with the 'system: manage packages' permission and then upload and install a malicious PHP package through the admin package installer to achieve remote code execution.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://gist.github.com/sermikr0/6f0a67e9d101746fcdb04827de137847
- https://www.vulncheck.com/advisories/pagekit-cms-privilege-escalation-via-userap
FAQ
What is CVE-2026-57518?
CVE-2026-57518 is a vulnerability with a CVSS score of 8.8 (HIGH). Pagekit CMS 1.0.18 contains a privilege escalation vulnerability that allows authenticated users with the 'user: manage users' permission to escalate privileges by assigning arbitrary custom roles to ...
How severe is CVE-2026-57518?
CVE-2026-57518 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-57518?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.