Is CVE-2026-4990 actively exploited?

No active exploitation of CVE-2026-4990 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4990 be exploited remotely?

Yes. CVE-2026-4990 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4990?

CVE-2026-4990 has a CVSS score of 7.3 (HIGH).

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HIGH

CVE-2026-4990

CWE-266Published: March 27, 2026· Updated: Mar 30, 2026

7.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:10.4th

Official Description

A security vulnerability has been detected in chatwoot up to 4.11.1. The affected element is an unknown function of the file /app/login of the component Signup Endpoint. Such manipulation of the argument signupEnabled with the input true leads to improper authorization. The attack can be executed 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-2026-4990 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.