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CVE-2020-35124

29
FAUCET Score

CVE-2020-35124 is a critical cross-site scripting (XSS) vulnerability in Mautic versions prior to 3.2.4, specifically within the assets component. This flaw allows unauthenticated remote attackers to inject malicious JavaScript via the Referer header during asset downloads. With a CVSS score of 9.6, this vulnerability is highly severe, requiring user interaction but potentially leading to complete compromise of confidentiality, integrity, and availability. Despite its critical rating, there is currently no evidence of active exploitation, nor are there publicly available exploit modules or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.2.4CPE matchmatch criteria
cpe:2.3:a:acquia:mautic:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.6CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.40%
Probability of exploitation in next 30 days
EPSS Percentile
82.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0239 is in the 86th percentile among its peer group of 834 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.8 Bluesky, 0.5 Mastodon, and 1.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: mautic/coreFixed in: 3.2.4
composerpatch availablevia ghsa
Product: mautic/coreFixed in: 2.16.5

Vendor Advisories (1)

composerGHSA-39wj-j3jc-858mcritical

XSS vulnerability leveraged through referrers could allow un-authorized admin access in Mautic

Jan 19, 2021

References

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