CVE-2026-9559
CriticalA path traversal vulnerability exists in the campaign import feature of Mautic 7.
Published May 29, 2026 · Updated Sep 10, 2026 · Also known as EUVD-2026-33277, GHSA-6r9h-4h75-7q4x
Key Facts
Patch in the next maintenance window- CVE-2026-9559 is a critical-severity vulnerability (CVSS 9.9 v3.1) affecting mautic/core (composer).
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 0.9% probability of exploitation in the next 30 days.
- Fixed versions are available, including mautic/core 7.1.2.
- Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.
CVSS v3.1
9.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
0.9%
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
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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 Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| mautic/corecomposer | >= 7.0.0 | 7.1.2 |
Patched Releases
mautic/core
7.1.2
Timeline
Publicly disclosed
May 29, 2026
Last updated
Sep 10, 2026
Weakness Type
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
- CWE-73 External Control of File Name or Path
- CWE-98 Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
References
- advisoryGHSA advisory
- advisoryhttps://github.com/CVEProject/cvelistV5/tree/main/cves/2026/9xxx/CVE-2026-9559.json
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2026-9559
- articlehttps://packagist.org
- otherhttps://github.com/mautic/mautic
FAQ
Common Questions.
A path traversal vulnerability exists in the campaign import feature of Mautic 7.
Affected: mautic/core (composer) versions >= 7.0.0. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including mautic/core 7.1.2.
Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.
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