Vulnerability · Published May 15, 2026 · Assigned by VulnCheck
CVE-2021-47964Schlix CMS 2.2.6-6 Remote Code Execution via core.blockmanager
High 8.8
In plain English
A high-severity code injection in Schlix CMS from Schlix. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.7%top 46.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Schlix CMS 2.2.6-6 contains a remote code execution vulnerability that allows authenticated attackers to execute arbitrary PHP code by uploading malicious extension packages through the block manager. Attackers can upload a crafted ZIP file containing PHP code in the packageinfo.inc file and trigger execution by accessing the About tab of the installed extension.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Schlix | Schlix CMS | 2.2.6-6 |
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- ExploitDB-49838 exploit
- Official Product Homepage product
- Product Reference product
- VulnCheck Advisory: Schlix CMS 2.2.6-6 Remote Code Execution via core.blockmanager third-party-advisory