Is CVE-2026-3951 actively exploited?

No active exploitation of CVE-2026-3951 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3951 be exploited remotely?

Yes. CVE-2026-3951 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-3951?

CVE-2026-3951 has a CVSS score of 4.3 (MEDIUM).

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MEDIUM

CVE-2026-3951

CWE-79Published: March 11, 2026· Updated: Mar 12, 2026

4.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:10.5th

Official Description

A security flaw has been discovered in LockerProject Locker 0.0.0/0.0.1/0.1.0. Affected is the function authIsAwesome of the file source-code/Locker-master/Ops/registry.js of the component Error Response Handler. The manipulation of the argument ID results in cross site scripting. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

NVD Source

Technical Analysis

CVE-2026-3951 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.