CVE-2026-44666

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/zelon88/HRConvert2/releases/tag/v3.3.8
https://github.com/zelon88/HRConvert2/security/advisories/GHSA-f74g-4wj8-j35h
https://github.com/zelon88/HRConvert2/security/advisories/GHSA-f74g-4wj8-j35h

Configurations

No configuration.

History

15 May 2026, 15:16

Type	Values Removed	Values Added
References	~~() https://github.com/zelon88/HRConvert2/security/advisories/GHSA-f74g-4wj8-j35h -~~	() https://github.com/zelon88/HRConvert2/security/advisories/GHSA-f74g-4wj8-j35h -

14 May 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-14 21:16

Updated : 2026-05-15 15:16

NVD link : CVE-2026-44666

Mitre link : CVE-2026-44666

CVE.ORG link : CVE-2026-44666

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

{"id": "CVE-2026-44666", "cveTags": [], "metrics": {"cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "LOW", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "LOW", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "LOW", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2026-05-14T21:16:47.370", "references": [{"url": "https://github.com/zelon88/HRConvert2/releases/tag/v3.3.8", "source": "security-advisories@github.com"}, {"url": "https://github.com/zelon88/HRConvert2/security/advisories/GHSA-f74g-4wj8-j35h", "source": "security-advisories@github.com"}, {"url": "https://github.com/zelon88/HRConvert2/security/advisories/GHSA-f74g-4wj8-j35h", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-78"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-05-15T15:16:53.630", "sourceIdentifier": "security-advisories@github.com"}