Vulnerability · Published May 29, 2026 · Assigned by Mautic
CVE-2026-9559
Critical 9.9
In plain English
A critical-severity path traversal in mautic/core. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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 & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | mautic/core | 7.1.2 | GHSA-6r9h-4h75-7q4x |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| mautic/core | 7.0.0 – before 7.1.2 |
Weakness: CWE-22, CWE-73, CWE-98 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H