---
title: "CVE-2026-9559: Mautic vulnerable to Path Traversal via Campaign Import"
url: https://erroneo.us/security/cve/CVE-2026-9559/
description: "CVE-2026-9559 (mautic/core (Composer (PHP))): A path traversal vulnerability exists in the campaign import feature of Mautic 7. When extracting uploaded ZIP…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-05-29
date_modified: 2026-07-02
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-9559"
kev: false
cvss: 9.9
epss: 0.00927
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-9559: Mautic vulnerable to Path Traversal via Campaign Import

**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 0.9% , percentile 60: FIRST’s model estimates a 0.9% chance of exploitation activity in the next 30 days, higher than 60% of all scored CVEs (moderate). 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)) >= 7.0.0, < 7.1.2, fixed in 7.1.2 . Check your lockfile, including transitive dependencies.

## What it is

A path traversal vulnerability exists in the campaign import feature of Mautic 7. When extracting uploaded ZIP files during campaign imports, a flaw in the validation logic allows file paths to escape the intended temporary directories. An authenticated user with campaign import privileges (campaign:imports:create) can write arbitrary PHP files to sensitive system directories. An attacker can exploit this to overwrite critical internal configuration or cache components, resulting in Remote Code Execution (RCE) under the context of the web server user.

## Affected packages

- Composer (PHP) `mautic/core` >= 7.0.0, < 7.1.2 → fixed: 7.1.2

## Affected products (CVE record)

-  mautic/core: 7.0.0 < 7.1.2

## Severity

- Mautic CVSS 3.1: 9.9 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.9 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A: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): 0.93% probability of exploitation activity in the next 30 days; percentile 60.

## Sources

- [GitHub Advisory GHSA-6r9h-4h75-7q4x](https://github.com/advisories/GHSA-6r9h-4h75-7q4x)
- [CVE.org record CVE-2026-9559](https://www.cve.org/CVERecord?id=CVE-2026-9559)
- [NVD entry CVE-2026-9559](https://nvd.nist.gov/vuln/detail/CVE-2026-9559)
- [github.com](https://github.com/mautic/mautic/security/advisories/GHSA-6r9h-4h75-7q4x)

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Source page: https://erroneo.us/security/cve/CVE-2026-9559/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt