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CVE-2019-9787

47
FAUCET Score

CVE-2019-9787 is a critical remote code execution vulnerability affecting WordPress versions prior to 5.1.1. It stems from improper filtering of comment content, mishandled CSRF protection, and incorrect SEO for A elements, leading to a cross-site scripting (XSS) vulnerability. This XSS can grant unauthenticated attackers administrative access, enabling arbitrary modification of .php files on the server. With a CVSS score of 8.8 (HIGH) and an EPSS score indicating high exploitability, this flaw presents a significant risk, despite no known active exploitation, public exploit code, or community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.1.1CPE matchmatch criteria
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
43.75%
Probability of exploitation in next 30 days
EPSS Percentile
98.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.4375 is in the 99th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

blog.ripstech.com / 2019/wordpress-csrf-to-rce
ExploitThird Party Advisory
github.com / WordPress/WordPress/commit/0292de60ec78c5a44956765189403654fe4d080b
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2019/03/msg00044.html
wordpress.org / news/2019/03/wordpress-5-1-1-security-and-maintenance-release
Release NotesVendor Advisory
wordpress.org / support/wordpress-version/version-5-1-1
Release NotesVendor Advisory
wpvulndb.com / vulnerabilities/9230
debian.org / security/2020/dsa-4677
securityfocus.com / bid/107411
Third Party AdvisoryVDB Entry