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CVE-2020-35128

29
FAUCET Score

CVE-2020-35128 describes a critical stored Cross-Site Scripting (XSS) vulnerability affecting Mautic versions prior to 3.2.4. An authenticated attacker with company management permissions can inject malicious JavaScript, potentially leading to full compromise of other user accounts, including administrators. This vulnerability carries a CVSS score of 9.0 (CRITICAL) due to its network-based attack vector, low complexity, and high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation (KEV: No) and no public exploit code (Metasploit, Nuclei, ExploitDB: None), the vulnerability has garnered significant community discussion with 10 mentions, indicating awareness.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0.0, < 2.16.5CPE matchmatch criteria
cpe:2.3:a:acquia:mautic:*:*:*:*:*:*:*:*
>= 3.2.0, < 3.2.4CPE matchmatch criteria
cpe:2.3:a:acquia:mautic:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.0CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.3
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.65%
Probability of exploitation in next 30 days
EPSS Percentile
74.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0165 is in the 84th percentile among its peer group of 265 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.6 Bluesky, 0.3 Mastodon, and 1.6 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 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-98j2-3jv7-274mcritical

Mautic stored Cross-site Scripting (XSS)

May 24, 2022

References

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