Is CVE-2026-4557 actively exploited?

No active exploitation of CVE-2026-4557 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4557 be exploited remotely?

Yes. CVE-2026-4557 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4557?

CVE-2026-4557 has a CVSS score of 4.3 (MEDIUM).

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MEDIUM

CVE-2026-4557

CWE-79Published: March 22, 2026· Updated: Mar 23, 2026

4.3

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:9.3th

Official Description

A vulnerability was detected in code-projects Exam Form Submission 1.0. This impacts an unknown function of the file /admin/update_s1.php. Performing a manipulation of the argument sname results in cross site scripting. The attack may be initiated remotely. The exploit is now public and may be used.

NVD Source

Technical Analysis

CVE-2026-4557 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.