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Egroupware

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high advisory

EGroupware Authenticated RCE via Malicious eTemplate Upload (CVE-2026-40187)

An authenticated EGroupware administrator can achieve OS-level Remote Code Execution (RCE) by uploading a malicious eTemplate XML file (`.xet`) containing unescaped backtick characters that lead to shell command execution within a PHP `eval()` call during template processing (CVE-2026-40187), impacting non-Docker or non-hardened EGroupware deployments.

EGroupware +1 rce web-vulnerability php linux
1r 2t 3i
critical advisory

EGroupware Critical RCE Vulnerability (CVE-2026-27823)

A critical remote code execution vulnerability (CVE-2026-27823) in EGroupware allows an authenticated attacker, or an unauthenticated attacker if self-registration is enabled, to execute arbitrary commands on the server by combining an authorization bypass, arbitrary file write via path traversal, and arbitrary file read, leading to full system compromise.

composer/egroupware/egroupware +1 RCE web-vulnerability egroupware php critical exploit
2r 4t