HighPublic exploit

Remote Code Execution in Craft CMS via Twig SSTI

IdentifiersCVE-2025-46731CWE-1336· Improper Neutralization of Special…

CVE-2025-46731 is a server-side template injection vulnerability in Craft CMS affecting the 4.x branch before 4.14.13 and the 5.x branch before 5.6.16, according to the provided description. The issue arises from Twig template processing and can permit remote code execution when an attacker with administrator access is able to reach the vulnerable functionality. Exploitation additionally requires the Craft CMS configuration setting ALLOW_ADMIN_CHANGES to be enabled. Under those conditions, attacker-controlled input can be interpreted by Twig as template code rather than inert data, leading to SSTI and potential execution of arbitrary code on the server.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can result in remote code execution on the Craft CMS host. Because exploitation requires administrator access, the vulnerability is most relevant for post-authentication compromise scenarios, insider threat, or abuse of stolen admin credentials. An attacker who exploits the flaw could execute arbitrary code in the security context of the web application, which may enable full site compromise, access to sensitive application data, modification of CMS content and configuration, deployment of persistent backdoors, and potential pivoting to adjacent systems depending on host permissions and environment configuration.

Mitigation

If you can’t patch tonight, do this now.

Apply the vendor patch as the primary mitigation. Where immediate patching is not possible, reduce exposure by setting ALLOW_ADMIN_CHANGES to false in production environments so administrative changes cannot be made through the control panel. Also restrict and monitor administrator access, enforce MFA for admin accounts, review for unauthorized template or configuration modifications, and limit the privileges of the underlying web server account to reduce post-exploitation impact.

Remediation

Patch, then assume compromise.

Upgrade Craft CMS to a patched release. Based on the provided advisory content, users should update to Craft CMS 4.14.13 or later on the 4.x branch, or 5.6.15 or later on the 5.x branch. Validate the exact fixed version against the vendor advisory because the supplied description references 5.6.16 while the advisory remediation text references 5.6.15. After upgrading, review administrative accounts, audit recent template and configuration changes, and rotate credentials if compromise is suspected.

PUBLIC EXPLOITS

Exploits

No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.

VALID 0 / 1 TOTALView more in app

All candidate exploits were filtered out by Mallory's validation.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

Craft CMSCmsapplication

Craft CMSCraft Cmsapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

2 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

2 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity2