Is CVE-2026-4877 actively exploited?

No active exploitation of CVE-2026-4877 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4877 be exploited remotely?

Yes. CVE-2026-4877 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4877?

CVE-2026-4877 has a CVSS score of 4.3 (MEDIUM).

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MEDIUM

CVE-2026-4877

CWE-79Published: March 26, 2026· Updated: Mar 30, 2026

4.3

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:9.5th

Official Description

A security flaw has been discovered in itsourcecode Payroll Management System up to 1.0. This affects an unknown function of the file /index.php. Performing a manipulation of the argument page results in cross site scripting. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.

NVD Source

Technical Analysis

CVE-2026-4877 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.