Is CVE-2026-13557 actively exploited?

No active exploitation of CVE-2026-13557 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-13557 be exploited remotely?

Yes. CVE-2026-13557 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-13557?

CVE-2026-13557 has a CVSS score of 4.3 (MEDIUM).

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MEDIUM

CVE-2026-13557

CWE-79Published: June 29, 2026· Updated: Jun 29, 2026

4.3

CVSS v3.1

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

Official Description

A vulnerability was identified in itsourcecode Online Hotel Management System 1.0. This vulnerability affects unknown code of the file /admin/mod_room/controller.php?action=add of the component POST Request Handler. Such manipulation of the argument Name leads to cross site scripting. The attack may be launched remotely. The exploit is publicly available and might be used.

NVD Source

Technical Analysis

CVE-2026-13557 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.