Concrete CMS affected by a stored XSS in Folder Function.The "Add Folder" functionality

MEDIUM 4.8CVE-2025-0660 · GHSA-pvmx-mjmh-jfcx · Published 10/03/2025 · updated 17/06/2026

In short

CVE-2025-0660 is a MEDIUM (CVSS 4.8) vulnerability affecting concrete5/concrete5, concrete cms (concretecms).
Chance of exploitation in the next 30 days (EPSS): 0.33%, higher than 25.5% of all vulnerabilities.
Fix: update to 9.4.0RC1, 9.4.0 or later.

Package	Affected versions	Patched versions
concrete5/concrete5 Packagist	`< 9.4.0RC1`	`9.4.0RC1`
concrete cms concretecms	`≥ 9.0, < 9.4.0`	`9.4.0`

Description

Concrete CMS versions 9.0.0 through 9.3.9 are affected by a stored XSS in Folder Function.The "Add Folder" functionality lacks input sanitization, allowing a rogue admin to inject XSS payloads as folder names. The Concrete CMS security team gave this vulnerability a CVSS 4.0 Score of 4.8 with vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N. Versions below 9 are not affected. Thanks, Alfin Joseph for reporting.

NVD description

References

nvd.nist.gov/vuln/detail/CVE-2025-0660 · ADVISORY
concretecms/bedrock#370 · WEB
concretecms/concretecms#12454 · WEB
documentation.concretecms.org/9-x/developers/introduction/version-history/940-release-notes · WEB
concretecms/concretecms · PACKAGE

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Package

Affected versions

Patched versions

concrete5/concrete5

Packagist

< 9.4.0RC1

9.4.0RC1

concrete cms

concretecms

≥ 9.0, < 9.4.0

9.4.0

Description

NVD description

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