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CVE-2019-9787

HIGH 8.8 CVSS 3.0
Published
March 14, 2019
Last modified
June 17, 2026
NVD status
Modified
Reported by
cve@mitre.org
Weakness
CWE-352
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

Affected WordPress components

  • WordPress core
    Confirmed match
    Before 5.1.1

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • n/a n/a — Versions not specified
  • wordpress wordpress — Before 5.1.1

References

  • www.securityfocus.com http://www.securityfocus.com/bid/107411 Third Party Advisory, VDB Entry
  • blog.ripstech.com https://blog.ripstech.com/2019/wordpress-csrf-to-rce/ Exploit, Third Party Advisory
  • github.com https://github.com/WordPress/WordPress/commit/0292de60ec78c5a44956765189403654fe4d080b Patch, Third Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2019/03/msg00044.html
  • wordpress.org https://wordpress.org/news/2019/03/wordpress-5-1-1-security-and-maintenance-release/ Release Notes, Vendor Advisory
  • wordpress.org https://wordpress.org/support/wordpress-version/version-5-1-1/ Release Notes, Vendor Advisory
  • wpvulndb.com https://wpvulndb.com/vulnerabilities/9230
  • www.debian.org https://www.debian.org/security/2020/dsa-4677
  • nvd.nist.gov Official NVD record