---
title: "CVE-2025-13828: Mautic user without privileged access to the Marketplace can install and uninstall composer packages"
url: https://erroneo.us/security/cve/CVE-2025-13828/
description: "CVE-2025-13828 (mautic/core (Composer (PHP))): SummaryA non privileged user can install and remove arbitrary packages via composer for a composer based…"
type: vulnerability-record
section: "Security Digest"
date_published: 2025-12-02
date_modified: 2025-12-02
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2025-13828"
kev: false
cvss: 9
epss: 0.00246
license: All rights reserved. Quote with attribution and a link.
---

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

**Signal:** Critical, preconditions apply. Severe if exploited, but exploitation needs conditions that may not apply to you. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.2% , percentile 15: FIRST’s model estimates a 0.2% chance of exploitation activity in the next 30 days, higher than 15% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.
- Only applies if your dependency tree includes mautic/core (Composer (PHP)) >= 4.0.0, < 4.4.18, fixed in 4.4.18 ; mautic/core (Composer (PHP)) >= 5.0.0, < 5.2.9, fixed in 5.2.9 ; mautic/core (Composer (PHP)) >= 6.0.0, < 6.0.7, fixed in 6.0.7 . Check your lockfile, including transitive dependencies.

## What it is

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.

## Affected packages

- Composer (PHP) `mautic/core` >= 4.0.0, < 4.4.18 → fixed: 4.4.18
- Composer (PHP) `mautic/core` >= 5.0.0, < 5.2.9 → fixed: 5.2.9
- Composer (PHP) `mautic/core` >= 6.0.0, < 6.0.7 → fixed: 6.0.7

## Affected products (CVE record)

- Mautic Mautic: <4.4.18, <5.2.9, <6.0.7

## Severity

- Mautic CVSS 4.0: 9 `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`
- GitHub CVSS 4.0: 9.0 `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`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.25% probability of exploitation activity in the next 30 days; percentile 15.

## Sources

- [GitHub Advisory GHSA-3fq7-c5m8-g86x](https://github.com/advisories/GHSA-3fq7-c5m8-g86x)
- [CVE.org record CVE-2025-13828](https://www.cve.org/CVERecord?id=CVE-2025-13828)
- [NVD entry CVE-2025-13828](https://nvd.nist.gov/vuln/detail/CVE-2025-13828)
- [github.com](https://github.com/mautic/mautic/security/advisories/GHSA-3fq7-c5m8-g86x)

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Source page: https://erroneo.us/security/cve/CVE-2025-13828/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt