HOMEVULNERABILITIESCVE-2019-9787
HIGH

CVE-2019-9787

CWE-352Published: March 14, 2019· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2019-9787 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

WordPress1 product(s)
wordpress
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/WordPress/WordPress/commit/0292de60ec78c5a44956765189403654fe4d080b
PATCHhttps://github.com/WordPress/WordPress/commit/0292de60ec78c5a44956765189403654fe4d080b
ADVISORYhttp://www.securityfocus.com/bid/107411
ADVISORYhttps://blog.ripstech.com/2019/wordpress-csrf-to-rce/
ADVISORYhttps://wordpress.org/news/2019/03/wordpress-5-1-1-security-and-maintenance-release/
ADVISORYhttps://wordpress.org/support/wordpress-version/version-5-1-1/
ADVISORYhttp://www.securityfocus.com/bid/107411
ADVISORYhttps://blog.ripstech.com/2019/wordpress-csrf-to-rce/
ADVISORYhttps://wordpress.org/news/2019/03/wordpress-5-1-1-security-and-maintenance-release/
ADVISORYhttps://wordpress.org/support/wordpress-version/version-5-1-1/

All References (16)

→
http://www.securityfocus.com/bid/107411Third Party Advisory · VDB Entry
→
https://blog.ripstech.com/2019/wordpress-csrf-to-rce/Exploit · Third Party Advisory
→
https://github.com/WordPress/WordPress/commit/0292de60ec78c5a44956765189403654fe4d080bPatch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2019/03/msg00044.html
→
https://wordpress.org/news/2019/03/wordpress-5-1-1-security-and-maintenance-release/Release Notes · Vendor Advisory
→
https://wordpress.org/support/wordpress-version/version-5-1-1/Release Notes · Vendor Advisory
→
https://wpvulndb.com/vulnerabilities/9230
→
https://www.debian.org/security/2020/dsa-4677
→
http://www.securityfocus.com/bid/107411Third Party Advisory · VDB Entry
→
https://blog.ripstech.com/2019/wordpress-csrf-to-rce/Exploit · Third Party Advisory
→
https://github.com/WordPress/WordPress/commit/0292de60ec78c5a44956765189403654fe4d080bPatch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2019/03/msg00044.html
→
https://wordpress.org/news/2019/03/wordpress-5-1-1-security-and-maintenance-release/Release Notes · Vendor Advisory
→
https://wordpress.org/support/wordpress-version/version-5-1-1/Release Notes · Vendor Advisory
→
https://wpvulndb.com/vulnerabilities/9230

Quick Facts

CVE IDCVE-2019-9787
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-352
CISA KEVNo
Affected1 vendor(s)
PublishedMar 14, 2019

Related CVEs (CWE-352)

CVE-2025-23922
10.0
CVE-2025-32642
10.0
CVE-2017-5145
10.0
CVE-2018-18934
9.8
CVE-2019-25729
9.8
CVE-2016-9866
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-9787 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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