CVE-2026-9559
A critical path‑traversal flaw in Mautic 7’s campaign import feature lets an authenticated user with import rights write arbitrary PHP files to sensitive directories. This can overwrite core configuration or cache files, enabling remote code execution on the web server. The vulnerability is exploitable over the network and requires only low‑level privileges.
No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.
Who is affected
Mautic 7 users who enable the campaign import feature and have the campaign:imports:create permission. The flaw affects the ZIP extraction logic used during campaign imports.
Real-world impact
An attacker who can import a campaign can place malicious PHP files in critical system directories, overwrite configuration or cache files, and execute arbitrary code as the web server user. This can lead to full compromise of the affected web application and potentially the underlying server.
Why this severity
The CVSS score of 9.9 reflects a network‑based attack (AV:N) that is easy to perform (AC:L) and only needs low privileges (PR:L). No user interaction is required (UI:N), and the vulnerability can compromise confidentiality, integrity, and availability (S:C/C:H/I:H/A:H).
What to do about it
No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.
No fix documented in sources
Timeline
- May 29, 2026 · May 29, 2026PublishedDisclosed and added to the National Vulnerability Database.
- Jul 21, 2026 · 14d agoAdvisory updatedThe NVD record was last revised.