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CVE-2019-9787

8.8 · HIGH

WordPress before 5.1.1 does not properly filter comment content, leading to Remote Code Execution by unauthenticated users in a default configuration.

Published Mar 14, 2019CWE-352EPSS 38.56%

Overview

CVE-2019-9787 is a high-severity vulnerability. It was published on March 14, 2019 and has a CVSS 3.0 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.0 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

WordPress before 5.1.1 does not properly filter comment content, leading to Remote Code Execution by unauthenticated users in a default configuration. This occurs because CSRF protection is mishandled, and because Search Engine Optimization of A elements is performed incorrectly, leading to XSS. The XSS results in administrative access, which allows arbitrary changes to .php files. This is related to wp-admin/includes/ajax-actions.php and wp-includes/comment.php.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.securityfocus.com/bid/107411Refblog.ripstech.com/2019/wordpress-csrf-to-rce/GitHubgithub.com/WordPress/WordPress/commit/0292de60ec78c5a44956765189403654fe4d080bReflists.debian.org/debian-lts-announce/2019/03/msg00044.htmlRefwordpress.org/news/2019/03/wordpress-5-1-1-security-and-maintenance-release/Refwordpress.org/support/wordpress-version/version-5-1-1/Refwpvulndb.com/vulnerabilities/9230Refwww.debian.org/security/2020/dsa-4677Refwww.securityfocus.com/bid/107411Refblog.ripstech.com/2019/wordpress-csrf-to-rce/

How CyberStrike helps

Frequently asked questions

What is CVE-2019-9787?

CVE-2019-9787 is a high-severity vulnerability. It was published on March 14, 2019 and has a CVSS 3.0 base score of 8.8 (HIGH).

How severe is CVE-2019-9787?

This vulnerability has a CVSS 3.0 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2019-9787?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-9787?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-9787 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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