CVE-2020-35124

Name: CVE-2020-35124
Creator: NVD / NIST
Published: 2021-01-28T06:15:13.373+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.6/10EPSS 2.40%

Last modified Jun 17, 2026

CVE-2020-35124 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. A cross-site scripting (XSS) vulnerability in the assets component of Mautic before 3.2.4 allows remote attackers to inject executable JavaScript through the Referer header of asset downloads.. EPSS estimates a 2.40% chance of exploitation in the next 30 days.

Description

A cross-site scripting (XSS) vulnerability in the assets component of Mautic before 3.2.4 allows remote attackers to inject executable JavaScript through the Referer header of asset downloads.

Metrics

CVSS 3.1

9.6/10

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

EPSS Probability

2.40%

81.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Acquia	Mautic	< 3.2.4

References

https://forum.mautic.org/c/announcements/16Vendor Advisory
https://github.com/mautic/mautic/security/advisories/GHSA-39wj-j3jc-858mThird Party Advisory
https://www.horizon3.ai/disclosures/mautic-unauth-xss-to-rceThird Party Advisory
https://www.mautic.org/blog/community/security-release-all-versions-mautic-prior-2-16-5-and-3-2-4Release Notes, Third Party Advisory
https://forum.mautic.org/c/announcements/16Vendor Advisory
https://github.com/mautic/mautic/security/advisories/GHSA-39wj-j3jc-858mThird Party Advisory
https://www.horizon3.ai/disclosures/mautic-unauth-xss-to-rceThird Party Advisory
https://www.mautic.org/blog/community/security-release-all-versions-mautic-prior-2-16-5-and-3-2-4Release Notes, Third Party Advisory

Timeline

Published: Jan 28, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-35124?

A cross-site scripting (XSS) vulnerability in the assets component of Mautic before 3.2.4 allows remote attackers to inject executable JavaScript through the Referer header of asset downloads.

How severe is CVE-2020-35124?

CVE-2020-35124 has a CVSS score of 9.6/10 (CRITICAL severity). The EPSS model estimates a 2.40% probability of exploitation in the next 30 days.

How do I fix CVE-2020-35124?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-35124?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST