Vulnerability Description
Concrete CMS 9.4.0 through 9.5.2 did not escape colliding page paths before rendering them in the location panel's duplicate-path confirmation dialog. The panel's check endpoint returned the submitted path unmodified in its JSON response, and client-side JavaScript inserted each value into the dialog as raw HTML, so a crafted page path executed script in the editor's authenticated browser session. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 2.0 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N. Thanks Yonatan Drori from Tenzai for reporting.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-81926?
CVE-2026-81926 is a documented vulnerability. Concrete CMS 9.4.0 through 9.5.2 did not escape colliding page paths before rendering them in the location panel's duplicate-path confirmation dialog. The panel's check endpoint returned the submitted...
How severe is CVE-2026-81926?
CVSS scoring is not yet available for CVE-2026-81926. Check NVD for updates.
Is there a patch for CVE-2026-81926?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.