CVE-2026-9558
1 advisory.
Packagist/mautic/core CVE-2026-9558: critical 9.9, EPSS 0.79%
Mautic has Server-Side Template Injection (SSTI) in Theme Templates
Action: Upgrade mautic/core to 5.2.11 or later.
composer require mautic/core:5.2.11composer require mautic/core:6.0.9composer require mautic/core:7.1.2Affected
| introduced | fixed | last affected |
|---|---|---|
| 1.3.0 | - | - |
| 5.0.0 | 5.2.11 | - |
| 6.0.0 | 6.0.9 | - |
| 7.0.0 | 7.1.2 | - |
Fixed versions
| 5.2.11 | 6.0.9 | 7.1.2 |
Sources
- osv: GHSA-9fx4-7cmj-47vg
- https://github.com/mautic/mautic/security/advisories/GHSA-9fx4-7cmj-47vg
- https://nvd.nist.gov/vuln/detail/CVE-2026-9558
- https://github.com/mautic/mautic
CVE-2026-9558 · published · modified · JSON