No advisories yet.
Solution
No solution given by the vendor.
Workaround
There are no official workarounds. To mitigate this vulnerability without upgrading, restrict theme upload and creation permissions (core:themes:create) to only highly trusted administrators.
Fri, 29 May 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | SSTI in Mautic Theme Engine Allows Authenticated Remote Code Execution | |
| First Time appeared |
Mautic
Mautic mautic |
|
| Vendors & Products |
Mautic
Mautic mautic |
Fri, 29 May 2026 11:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Fri, 29 May 2026 10:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A Server-Side Template Injection (SSTI) vulnerability exists in Mautic's theme engine. The platform renders uploaded Twig templates without a sandbox or strict function restrictions. Authenticated users with permissions to create or upload themes can abuse this to execute arbitrary code on the hosting server (Remote Code Execution) or access restricted system files and configuration settings. | |
| Weaknesses | CWE-1336 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: Mautic
Published:
Updated: 2026-05-29T10:49:06.099Z
Reserved: 2026-05-26T08:36:52.218Z
Link: CVE-2026-9558
Updated: 2026-05-29T10:49:00.571Z
Status : Deferred
Published: 2026-05-29T11:16:17.980
Modified: 2026-05-29T15:39:34.620
Link: CVE-2026-9558
No data.
OpenCVE Enrichment
Updated: 2026-05-29T11:30:42Z