What’s Vulnerable › Vulnerabilities
CVE-2019-19373
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 4.8% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2019-12-11 · updated 2026-06-17
- Weakness: CWE-502
Description
An issue was discovered in Squiz Matrix CMS 5.5.0 prior to 5.5.0.3, 5.5.1 prior to 5.5.1.8, 5.5.2 prior to 5.5.2.4, and 5.5.3 prior to 5.5.3.3 where a user can trigger arbitrary unserialization of a PHP object from a packages/cms/page_templates/page_remote_content/page_remote_content.inc POST parameter during processing of a Remote Content page type. This unserialization can be used to trigger the inclusion of arbitrary files on the filesystem (local file inclusion), and results in remote code execution.
Affected products
- Squiz Matrix: from 5.5.0.0 before 5.5.0.3; from 5.5.1.0 before 5.5.1.8; from 5.5.2.0 before 5.5.2.4; from 5.5.3.0 before 5.5.3.3 — fixed in 5.5.0.3, 5.5.1.8, 5.5.2.4, 5.5.3.3
How to fix
Upgrade to a fixed version: Squiz Matrix 5.5.0.3, 5.5.1.8, 5.5.2.4, 5.5.3.3. Check the vendor advisory for mitigations.
References
- http://packetstormsecurity.com/files/155671/Squiz-Matrix-CMS-5.5.x.x-Code-Execution-Information-Disclosure.html
- http://seclists.org/fulldisclosure/2019/Dec/34
- https://matrix.squiz.net/releases/5.5/5.5.3.3
- https://zxsecurity.co.nz/wp-content/uploads/2019/12/ZX%20Security%20Advisory%20-%20Squiz%20Matrix%20CMS%20-%20Multiple%20Vulnerabilities.pdf
- http://packetstormsecurity.com/files/155671/Squiz-Matrix-CMS-5.5.x.x-Code-Execution-Information-Disclosure.html
- http://seclists.org/fulldisclosure/2019/Dec/34
- https://matrix.squiz.net/releases/5.5/5.5.3.3
- https://zxsecurity.co.nz/wp-content/uploads/2019/12/ZX%20Security%20Advisory%20-%20Squiz%20Matrix%20CMS%20-%20Multiple%20Vulnerabilities.pdf
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