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CVE-2024-3903: add custom css and js vulnerability
CVE-2024-3903: high vulnerability affecting add custom css and js. Check CVSS, KEV status, business impact and recommended administrator actions.
- CVSS
- 7.1 HIGH
- EPSS
- 11.62%
- Known exploited
- not in KEV
- Product
- add custom css and js
What is known
The Add Custom CSS and JS WordPress plugin through 1.20 does not have CSRF check in some places, and is missing sanitisation as well as escaping, which could allow attackers to make logged in as author and above add Stored XSS payloads via a CSRF attack
Business impact
Successful exploitation of CVE-2024-3903, a high vulnerability (CVSS 7.1) affecting add custom css and js, may affect the confidentiality, integrity or availability of the vulnerable environment. The exact impact depends on the installed version, exposed interfaces and deployment configuration.
Recommended administrator action
Confirm whether add custom css and js is present and compare installed versions with the vendor advisory and NVD record. Apply the vendor patch or documented mitigation; until remediation is complete, reduce exposure of affected interfaces, review relevant logs and monitor for indicators of exploitation. DataHouse can support version verification, managed patching, network exposure reduction, log review and backup validation for dedicated, cloud and colocated environments.