CVE-2026-9558GHSA-9FX4-7CMJ-47VG
A Server-Side Template Injection (SSTI) vulnerability exists in Mautic's theme engine.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 4.4.20, 5.2.11, 6.0.9, 7.1.2
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- 2 proofs of concept on GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- mautic/core
From 1.3.0 · fixed in 4.4.20; From 5.0.0 · fixed in 5.2.11; From 6.0.0 · fixed in 6.0.9; From 7.0.0 · fixed in 7.1.2
- mautic/corePackagist
From 1.3.0
- mautic/corePackagist
From 5.0.0 · fixed in 5.2.11
- mautic/corePackagist
From 6.0.0 · fixed in 6.0.9
- mautic/corePackagist
From 7.0.0 · fixed in 7.1.2