CVE-2019-9787
8.8
HIGH
CVSS 3.1
EPSS 81.0%
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.
How to fix CVE-2019-9787
To remediate CVE-2019-9787, upgrade the affected package to a fixed version below.
- —upgrade to 5.1.1+dfsg1-1 or later
Is CVE-2019-9787 being exploited?
Likely — EPSS is 81.0%, placing CVE-2019-9787 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (1)
- from 0, < 5.1.1+dfsg1-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |