CVE-2026-115189
Summary
| CVE | CVE-2026-115189 |
|---|---|
| State | PUBLISHED |
| Assigner | Mautic |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-26 14:16:30 UTC |
| Updated | 2026-10-26 14:21:33 UTC |
| Description | A server-side template injection vulnerability exists in the Twig theme rendering sandbox of Mautic. The sandbox introduced to restrict user-uploaded theme templates (the fix for GHSA-9fx4-7cmj-47vg) does not fully enforce its restrictions, allowing a crafted theme template to escape the sandbox. An authenticated user with the core:themes:create permission can upload a malicious theme whose template is later rendered, resulting in execution of arbitrary code on the server with the privileges of the web server process. This allows the attacker to execute operating system commands, read server-side files including configuration files and database credentials, write files, and reach internal services. In default installations the core:themes:create permission is granted to the Administrator role, and in multi-operator setups it may be delegated to other roles. This is an incomplete fix for GHSA-9fx4-7cmj-47vg. |
Risk And Classification
Primary CVSS: v3.1 8.8 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Problem Types: CWE-1336 | CWE-1336 CWE-1336 Improper Neutralization of Special Elements Used in a Template Engine
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 8.8 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | CVSS | 8.8 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/mautic/mautic/security/advisories/GHSA-h7pm-79gc-8867 | [email protected] | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: AbisheikMagesh (@amagesh1) (en)
CNA: Jace (@manus-use) (en)
CNA: @sec-reex (en)
CNA: Ghost (@prakhar0x01) (en)
CNA: Aleksei Ivanov (@lostfany) (en)
CNA: trung (@trungpv19) (en)
CNA: Submersion AI - Security Research Team (SRT) (@SRTSubmersionAI) (en)
CNA: Abdullah Kareem (@CyberKareem) (en)
CNA: Moath Aloufi (@m0xath) (en)
CNA: @Forrof (en)
CNA: @cxcsec (en)
CNA: Lucas Dodgson (@lucasdodgson) (en)
CNA: @FlowOverFail (en)
CNA: @tal2k9dev-star (en)
CNA: Tal Lavi (@tlavi00) (en)
CNA: @Den1al (en)
CNA: Patryk Gruszka (@patrykgruszka) (en)
CNA: John Linhart (@escopecz) (en)
CNA: Leuchtfeuer Digital Marketing (@Leuchtfeuer) (en)
Additional Advisory Data
Workarounds
CNA: There are no official workarounds. To mitigate this vulnerability without upgrading, restrict the core:themes:create permission to trusted administrator accounts only and do not delegate theme creation to operator-level roles.