Vulnerabilities CVE-2026-44666

CVE-2026-44666

Critical

Open

TLP:CLEAR

HRConvert2: Missing Sanitization enables Unauthenticated Remote Command Execution

NVD CVE.org

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Description

HRConvert2 is a self-hosted, drag-and-drop & nosql file conversion server & share tool. Prior to 3.3.8, the sanitizeString() function in convertCore.php is missing backtick (`) and tab (\t) from its strip list. User input then reaches shell_exec(), where the shell interprets these characters and commands within filenames execute. This vulnerability is fixed in 3.3.8.

Details

CVSS Score: 9.3
EPSS Score ⓘ: 0.30%

22.2th percentile
CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L
Confidence: 90%
Published: May 14, 2026
Last Modified: May 14, 2026

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