XSS in Concretecms Concrete Cms
CVE-2023-44766
A Cross Site Scripting (XSS) vulnerability in Concrete CMS v.9.2.1 allows an attacker to execute arbitrary code via a crafted script to the SEO - Extra from Page Settings. NOTE: the vendor disputes this because this SEO-related header change can only be made by an admin, and allowing an admin to place JavaScript there is an intentional customization feature.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.006 (44.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Concretecms Concrete Cms — versions 9.2.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/sromanhu/ConcreteCMS-Stored-XSS---SEO (Exploit)
- www.concretecms.org/about/project-news/security/security-advisory-2023-10-31-co… (Third Party Advisory)
Frequently asked questions
- What is CVE-2023-44766?
- CVE-2023-44766 is a medium-severity vulnerability in Concretecms Concrete Cms, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2023-10-06.
- How severe is CVE-2023-44766?
- Medium severity. CVSS v3 base score is 4.8 out of 10.
- Is CVE-2023-44766 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.