Security Digest · Vulnerability record
CVE-2025-13828: Mautic user without privileged access to the Marketplace can install and uninstall composer packages
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.
CVSS 9.0 Critical EPSS 0.2% · p15
Should you act?
Critical, preconditions apply
Severe if exploited, but exploitation needs conditions that may not apply to you. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- 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.
From the GitHub advisory
Summary
A 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.
Impact
A low-privileged user of the platform can install malicious code to obtain higher privileges.
Weakness type: CWE-862, CWE-284.
Product: mautic/core (Composer (PHP)) · Assigned by: Mautic · Published: 2025-12-02
Affected and fixed versions
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| Composer (PHP) | mautic/core | >= 4.0.0, < 4.4.18 | 4.4.18 |
| Composer (PHP) | mautic/core | >= 5.0.0, < 5.2.9 | 5.2.9 |
| Composer (PHP) | mautic/core | >= 6.0.0, < 6.0.7 | 6.0.7 |
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| Mautic | Mautic | <4.4.18, <5.2.9, <6.0.7 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| Mautic | 4.0 | 9 Critical | 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 | 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 |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Attack requirements: present (depends on deployment conditions)
- Privileges required: low (any account)
- User interaction: none
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- 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.
Timeline
- — CVE record last updated
- — CVE record published by Mautic
- — GitHub-reviewed advisory GHSA-3fq7-c5m8-g86x published (critical)
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- GitHub Advisory GHSA-3fq7-c5m8-g86x github.com
- CVE.org record CVE-2025-13828 cve.org
- NVD entry CVE-2025-13828 nvd.nist.gov
Other references from the CVE record and advisory
- github.com github.com
Critical Composer (PHP) advisories · Today’s Security Digest