Cross-site scripting in Craft CMS

Published: 2019-12-31 | Updated: 2020-08-08
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-9554
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
Craft CMS
Web applications / CMS

Vendor Pixel & Tonic, Inc.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Cross-site scripting

EUVDB-ID: #VU34922

Risk: Low


CVE-ID: CVE-2019-9554

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: Yes


The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

In the 3.1.12 Pro version of Craft CMS, XSS has been discovered in the header insertion field when adding source code at an s/admin/entries/news/new URI.


Install update from vendor's website.

Vulnerable software versions

Craft CMS: 3.1.12

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?