Is CVE-2026-44666 actively exploited?

No active exploitation of CVE-2026-44666 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-44666 be exploited remotely?

Yes. CVE-2026-44666 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-44666?

CVE-2026-44666 has a CVSS score of 9.3 (CRITICAL).

HOME VULNERABILITIESCVE-2026-44666

CRITICAL

CVE-2026-44666

CWE-78Published: May 14, 2026· Updated: May 15, 2026

9.3

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:14.6th

Official 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.

NVD Source

Technical Analysis

CVE-2026-44666 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeX

Impact

Confidentiality

Integrity

Availability

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