What’s Vulnerable › Vulnerabilities

CVE-2020-35125

• Severity: critical (CVSS 9.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-02-09 · updated 2026-06-17
• Weakness: CWE-79

Description

A cross-site scripting (XSS) vulnerability in the forms component of Mautic before 3.2.4 allows remote attackers to inject executable JavaScript via mautic[return] (a different attack method than CVE-2020-35124, but also related to the Referer concept).

Affected products

• Mautic: before 2.16.5; from 3.0.0 before 3.2.4 — fixed in 2.16.5, 3.2.4

How to fix

Upgrade to a fixed version: Mautic 2.16.5, 3.2.4. Check the vendor advisory for mitigations.

References

• https://forum.mautic.org/c/announcements/16
• https://github.com/mautic/mautic/security/advisories/GHSA-42q7-95j7-w62m
• https://www.horizon3.ai/disclosures/mautic-unauth-xss-to-rce
• https://www.mautic.org/blog/community/security-release-all-versions-mautic-prior-2-16-5-and-3-2-4
• https://forum.mautic.org/c/announcements/16
• https://github.com/mautic/mautic/security/advisories/GHSA-42q7-95j7-w62m
• https://www.horizon3.ai/disclosures/mautic-unauth-xss-to-rce
• https://www.mautic.org/blog/community/security-release-all-versions-mautic-prior-2-16-5-and-3-2-4

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