🛡️ CVE-2020-35125 — core

🔴 CVSS 9.5 — Critical ✅ No Known Exploit CWE-79 OSV
9.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Mautic is vulnerable to XSS vulnerability

Impact

This is a cross-site scripting vulnerability which affects every version of Mautic and could allow an attacker unauthorised administrator level access to Mautic.

This vulnerability was reported by Naveen Sunkavally at Horizon3.ai.

Patches

Upgrade to 3.2.4 or 2.16.5.

Link to patch for 2.x versions: https://github.com/mautic/mautic/compare/2.16.4...2.16.5.diff

Link to patch for 3.x versions: https://github.com/mautic/mautic/compare/3.2.2...3.2.4.diff

Workarounds

None

For more information

If you have any questions or comments about this advisory:

  • Post in https://forum.mautic.org/c/support
  • Email us at security@mautic.org

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2020-35125 is classified as CWE-79: Cross-site Scripting (XSS). User-supplied data is written into a page without escaping, so attacker script runs in the browser of anyone who views it.

Affected software

CVE-2020-35125 is recorded against 1 package.

  • mautic/core (from 3.0.0 up to 3.2.4)

Timeline and source

Published on 15 May 2024 and last revised on 8 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

github.com (Web)
nvd.nist.gov (Advisory)
forum.mautic.org (Web)
github.com (Web)
packagist.org (Web)
www.horizon3.ai (Web)
www.mautic.org (Web)

Details

Severity CRITICAL
CVSS Score 9.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CWE CWE-79
Public Exploit ✅ No
Source OSV
Published 2024-05-15
Updated 2026-08-12
Modified 2026-07-08
Fix URL N/A

Affected Packages

Software From version Fixed in
mautic/core 3.0.0 3.2.4

Similar Threats

Exploit Protection

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