CVE
CVE-2026-44666
HRConvert2: Missing Sanitization enables Unauthenticated Remote Command Execution
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.
Package Versions Affected
Package Version
patch Availability
No items found.
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CVSS Version
Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
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4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-
Related Resources
No items found.
References
https://github.com/zelon88/HRConvert2/releases/tag/v3.3.8, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44666.json, https://github.com/zelon88/HRConvert2/security/advisories/GHSA-f74g-4wj8-j35h, https://nvd.nist.gov/vuln/detail/CVE-2026-44666