What’s Vulnerable › Vulnerabilities

CVE-2024-1245: Concrete CMS version 9 before 9.2.5 is vulnerable to stored XSS in file tags and description attributes

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-02-09 · updated 2026-06-17
• Weakness: CWE-20

Description

Concrete CMS version 9 before 9.2.5 is vulnerable to stored XSS in file tags and description attributes since administrator entered file attributes are not sufficiently sanitized in the Edit Attributes page. A rogue administrator could put malicious code into the file tags or description attributes and, when another administrator opens the same file for editing, the malicious code could execute. The Concrete CMS Security team scored this 2.4 with CVSS v3 vector AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:N.

Affected products

• Concrete CMS: from 9.0.0 before 9.2.5 — fixed in 9.2.5

How to fix

Upgrade to a fixed version: Concrete CMS 9.2.5. Check the vendor advisory for mitigations.

References

• https://documentation.concretecms.org/9-x/developers/introduction/version-history/925-release-notes
• https://www.concretecms.org/about/project-news/security/2024-02-04-security-advisory
• https://documentation.concretecms.org/9-x/developers/introduction/version-history/925-release-notes
• https://www.concretecms.org/about/project-news/security/2024-02-04-security-advisory

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