XSS in Concrete Cms
CVE-2024-8661
Concrete CMS versions 9.0.0 to 9.3.3 and below 8.5.19 are vulnerable to Stored XSS in the "Next&Previous Nav" block. A rogue administrator could add a malicious payload by executing it in the browsers of targeted users. The Concrete CMS Security Team gave this vulnerability a CVSS v4 score of 4.6 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N Since the "Next&Previous Nav" block output was not sufficiently sanitized, the malicious payload could be executed in the browsers of targeted users. Thanks, Chu Quoc Khanh for reporting.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.004 (34.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Concrete Cms — versions 9.0.0, 5.0.0
- Concretecms Concrete_cms
Weakness classification (CWE)
Public proof-of-concept exploits
References
- ff5b8ace-8b95-4078-9743-eac1ca5451de (Release Notes)
- ff5b8ace-8b95-4078-9743-eac1ca5451de (Release Notes)
- ff5b8ace-8b95-4078-9743-eac1ca5451de (Patch)
- ff5b8ace-8b95-4078-9743-eac1ca5451de (Patch)
Frequently asked questions
- What is CVE-2024-8661?
- CVE-2024-8661 is a medium-severity vulnerability in Concrete Cms, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2024-09-16.
- How severe is CVE-2024-8661?
- Medium severity. CVSS v3 base score is 4.8 out of 10.
- Is CVE-2024-8661 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.