Description
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.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
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sromanhu/CVE-2023-44766_ConcreteCMS-Stored-XSS---SEO ★ 0 · Sep 25, 2023
Cross Site Scripting vulnerability in ConcreteCMS v.9.2.1 allows a local attacker to execute arbitrary code via a crafted script to the SEO - Header Extra Content from Page Settings.
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | concrete5/concrete5 | <= 9.2.1 | — | GHSA-437p-jfm4-2387 |