Is CVE-2026-13556 actively exploited?

No active exploitation of CVE-2026-13556 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-13556 be exploited remotely?

Yes. CVE-2026-13556 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-13556?

CVE-2026-13556 has a CVSS score of 4.3 (MEDIUM).

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MEDIUM

CVE-2026-13556

CWE-79Published: June 29, 2026· Updated: Jul 1, 2026

4.3

CVSS v3.1

EPSS:0.44%probability of exploitation in 30 daysPercentile:35.4th

Official Description

A vulnerability was determined in itsourcecode Online Hotel Management System 1.0. This affects an unknown part of the file /admin/mod_users/controller.php?action=edit of the component POST Request Handler. This manipulation of the argument Name causes cross site scripting. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized.

NVD Source

Technical Analysis

CVE-2026-13556 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.