CVE-2026-73679
ImpressCMS contains an authenticated remote code execution vulnerability in the custom tag module that allows authenticated administrators t
CVSS
7.2
High
EPSS
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KEV
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Exploit Today
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0-100
Published: Aug 14, 2026 · Last modified: Aug 14, 2026 · CWE-94
Not enough EPSS history yet.
ImpressCMS contains an authenticated remote code execution vulnerability in the custom tag module that allows authenticated administrators to execute arbitrary PHP code by storing a malicious payload in a custom tag with PHP type enabled. The application decodes HTML-encoded content via undoHtmlSpecialChars() before passing it to eval() in the renderWithPhp() method, bypassing HTML Purifier sanitization, and the payload is triggered on every frontend page load through the preload event system.