Is CVE-2026-4540 actively exploited?

No active exploitation of CVE-2026-4540 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4540 be exploited remotely?

Yes. CVE-2026-4540 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4540?

CVE-2026-4540 has a CVSS score of 7.3 (HIGH).

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HIGH

CVE-2026-4540

CWE-74Published: March 22, 2026· Updated: Mar 23, 2026

7.3

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:7.7th

Official Description

A vulnerability was detected in projectworlds Online Notes Sharing System 1.0. This issue affects some unknown processing of the file /login.php of the component Parameters Handler. The manipulation of the argument User results in sql injection. The attack can be executed remotely. The exploit is now public and may be used.

NVD Source

Technical Analysis

CVE-2026-4540 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.