CVE-2026-28697: critical vulnerability in craftcms cms
Craft Affected by Authenticated RCE via "craft.app.fs.write()" in Twig Templates
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.4epss 1.2%
Craft is a content management system (CMS). Prior to 4.17.0-beta.1 and 5.9.0-beta.1, an authenticated administrator can achieve Remote Code Execution (RCE) by injecting a Server-Side Template Injection (SSTI) payload into Twig template fields (e.g., Email Templates). By calling the craft.app.fs.write() method, an attacker can write a malicious PHP script to a web-accessible directory and subsequently access it via the browser to execute arbitrary system commands. This vulnerability is fixed in 4.17.0-beta.1 and 5.9.0-beta.1.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Affected products
craftcms · cmsRelated CVEs — craftcms cms
In the same product, most dangerous first.
CVE-2025-32432CRITICALCraft CMS Allows Remote Code ExecutionEPSS 99.8%KEVCVE-2024-56145CRITICALRCE when PHP `register_argc_argv` config setting is enabled in craftcms/cmsEPSS 97.5%KEVCVE-2025-23209HIGHPotential RCE with a compromised security key in craft/cmsEPSS 21.6%KEVCVE-2023-41892CRITICALCraft CMS Remote Code Execution vulnerabilityEPSS 94.2%CVE-2026-32267HIGHCraft CMS Vulnerable to Privilege Escalation/Bypass through UsersController->actionImpersonateWithToken()EPSS 9.6%CVE-2023-40035HIGHCraft CMS vulnerable to Remote Code Execution via validatePath bypassEPSS 2.3%