CVE-2020-35128

CRITICAL

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 a...

Affects 1 product across 1 vendor.

CVSS 3.19.0
EPSS1.7%
Percentile76th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, low privileges required, requires user interaction, can impact systems beyond the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.
CWE Weakness Definitions
CWE-79: Cross-Site Scripting (XSS)

Attacker injects malicious scripts into web pages viewed by other users, executing in the victim's browser context.

Related Attack Patterns (CAPEC)
CAPEC-85 AJAX Footprinting
via CWE-79
CAPEC-209 XSS Using MIME Type Mismatch
via CWE-79
CAPEC-588 DOM-Based XSS
via CWE-79
CAPEC-591 Reflected XSS
via CWE-79
CAPEC-592 Stored XSS
via CWE-79
Show all 6
via CWE-79

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

Mautic before version 3.2.4 is vulnerable to a stored Cross-Site Scripting (XSS) attack, which allows attackers with permission to manage companies to execute arbitrary JavaScript in the context of other users, including administrators.

BSID: BS-2021-GLOBAL-149596-C • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: HIGH

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Frequently Asked Questions
What is CVE-2020-35128?
Mautic before version 3.2.4 is vulnerable to a stored Cross-Site Scripting (XSS) attack, which allows attackers with permission to manage companies to execute arbitrary JavaScript in the context of other users, including administrators.
What is the CVSS score for CVE-2020-35128?
CVE-2020-35128 has CVSS 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H. EPSS: 1.7%.
Is CVE-2020-35128 actively exploited?
No confirmed active exploitation of CVE-2020-35128 as of 2026-09-25.
How do I remediate CVE-2020-35128?
Priority: IMMEDIATE.
What systems are affected by CVE-2020-35128?
CVE-2020-35128 affects Acquia Mautic.
Vulnerability Details
CVE IDCVE-2020-35128
BSIDBS-2021-GLOBAL-149596-C BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Published2021-01-19
Last Modified2026-06-17
ICS Relevance0%
Weakness (CWE)
SourceNVD
Official 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.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

An attacker with the ability to manage companies in Mautic can inject malicious scripts into the application. When other users, including administrators, view the affected content, the scripts execute in their browser context, potentially allowing the attacker to perform actions on their behalf.

Exploitation Likelihood: HIGH

Affected Products
VendorProductAffected Versions
Acquia Mautic ≥ 2.0.0, < 2.16.5 ≥ 3.2.0, < 3.2.4
Remediation

No official vendor advisory link on record. See the CVE record →

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 2095 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Model/workspace/models/qwen2.5-coder-32b-instruct-bf16
ConfidenceHIGH
Enriched At2026-05-24
SHA-512 Audit Hash3131a91e76cfd2041c33b39bb7ca20906c13f8b44604aac100dbaabfdc3dbd38617141c06c689581801f2aa516ffda1c3276e53a5bac303edf580be36e156772
Related CVEs affecting Acquia
CVE-2024-47051 9.9 This advisory addresses two critical security vulnerabilities present in Maut... CVE-2020-35125 9.6 A cross-site scripting (XSS) vulnerability in the forms component of Mautic b... CVE-2020-35124 9.6 A cross-site scripting (XSS) vulnerability in the assets component of Mautic ... CVE-2022-25769 9.1 ImpactThe default .htaccess file has some restrictions in the access to PHP f... CVE-2021-27915 9.0 Prior to the patched version, there is an XSS vulnerability in the descriptio...
View all Acquia CVEs →

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