Cross-Site Scripting in Concrete CMS by Concrete5
CVE-2026-81926

2LOW

Key Information:

Vendor

Concrete Cms

Status
Concrete Cms
Vendor
CVE Published:
15 September 2026

What is CVE-2026-81926?

Concrete CMS versions 9.4.0 through 9.5.2 are susceptible to a Cross-Site Scripting vulnerability arising from improper handling of colliding page paths. In the duplicate-path confirmation dialog of the location panel, the CMS fails to escape the submitted paths which can lead to script execution within an authenticated user's session. This vulnerability poses security risks as it allows an attacker to inject malicious scripts into the client-side JavaScript environment, potentially compromising the integrity of the user's session.

Affected Version(s)

Concrete CMS 9.4.0 <= 9.5.2

References

https://documentation.concretecms.org/developers/introduc...
release-notes

CVSS V4

Score:
2
Severity:
LOW
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

tenzai
.