Cross-site scripting in Mautic - CVE-2020-35128
Published: January 14, 2021 / Updated: May 25, 2026
Vulnerability identifier: #VU132233
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-35128
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Mautic
Affected software:
Mautic
Mautic
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary script code in a victim's browser.
The vulnerability exists due to cross-site scripting in the company creation and editing functionality when handling company data input. A remote user can submit specially crafted company data to execute arbitrary script code in a victim's browser.
Exploitation requires the user to be logged in as an administrator.
How to mitigate CVE-2020-35128
Install security update from vendor's website.