Is CVE-2026-4171 actively exploited?

No active exploitation of CVE-2026-4171 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4171 be exploited remotely?

Yes. CVE-2026-4171 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4171?

CVE-2026-4171 has a CVSS score of 6.3 (MEDIUM).

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MEDIUM

CVE-2026-4171

CWE-285Published: March 16, 2026· Updated: Mar 16, 2026

6.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:10.3th

Official Description

A security vulnerability has been detected in CodeGenieApp serverless-express up to 4.17.1. Affected by this issue is some unknown functionality of the file examples/lambda-function-url/packages/api/models/TodoList.ts of the component API Endpoint. The manipulation of the argument userId leads to authorization bypass. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

NVD Source

Technical Analysis

CVE-2026-4171 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.