Is CVE-2026-3304 actively exploited?

No active exploitation of CVE-2026-3304 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3304 be exploited remotely?

Yes. CVE-2026-3304 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-3304?

CVE-2026-3304 has a CVSS score of 8.7 (HIGH).

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HIGH

CVE-2026-3304

CWE-459Published: February 27, 2026· Updated: Mar 2, 2026

8.7

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.7th

Official Description

Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability in Multer prior to version 2.1.0 allows an attacker to trigger a Denial of Service (DoS) by sending malformed requests, potentially causing resource exhaustion. Users should upgrade to version 2.1.0 to receive a patch. No known workarounds are available.

NVD Source

Technical Analysis

CVE-2026-3304 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:N/VI:N/VA:H/SC:N/SI:N/SA:N/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