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Vulnerability record · CVE-2020-35128 · published 19 January 2021

CVE-2020-35128: Acquia mautic cross-site scripting vulnerability

AAcquia · Mautic

Mautic before 3.2.4 is affected by stored XSS. An attacker with permission to manage companies, an application feature, could attack other users, including administrators. For example, by loading an externally crafted JavaScript file, an attacker could eventually perform actions as the target user. These actions include changing the user passwords, altering user or email addresses, or adding a new administrator to the system.

9.0 CVSS 3.1 Critical EPSS 1.7% · top 24.4% CWE-79 · Cross-site scripting
9.0CVSS 3.1 base score, v2 6.0
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Mautic before 3.2.4 is affected by stored XSS. An attacker with permission to manage companies, an application feature, could attack other users, including administrators. For example, by loading an externally crafted JavaScript file, an attacker could eventually perform actions as the target user. These actions include changing the user passwords, altering user or email addresses, or adding a new administrator to the system.

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://forum.mautic.org/c/announcements/16 Vendor Advisory
https://forum.mautic.org/t/security-release-for-all-versions-of-mautic-prior-to-2-16-5-and-3-2-4/17786 ExploitVendor Advisory
https://labs.bishopfox.com/advisories/mautic-version-3.2.2 Third Party Advisory
https://forum.mautic.org/c/announcements/16 Vendor Advisory
https://forum.mautic.org/t/security-release-for-all-versions-of-mautic-prior-to-2-16-5-and-3-2-4/17786 ExploitVendor Advisory
https://labs.bishopfox.com/advisories/mautic-version-3.2.2 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-35128), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.