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ipl/web is vulnerable to reflected XSS by malformed search requests

High severity GitHub Reviewed Published Apr 22, 2026 in Icinga/ipl-web • Updated Jun 9, 2026

Package

composer ipl/web (Composer)

Affected versions

>= 0.11.0, <= 0.13.0
<= 0.10.2

Patched versions

0.13.1
0.10.3

Description

Impact

The vulnerability allows an attacker to inject malicious Javascript into a victim's browser to run it in the context of Icinga Web. The victim needs to visit a specifically prepared website and may have no immediate chance to notice any wrongdoing.

Patches

Version 0.13.1 includes a fix for this. It will be published as part of icinga-php-library version 0.19.2.

Workarounds

Enable the Content-Security-Policy (CSP) in the general configuration of Icinga Web available since version 2.12.0.

References

None

References

@nilmerg nilmerg published to Icinga/ipl-web Apr 22, 2026
Published to the GitHub Advisory Database Apr 29, 2026
Reviewed Apr 29, 2026
Published by the National Vulnerability Database May 8, 2026
Last updated Jun 9, 2026

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
High
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(14th percentile)

Weaknesses

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Learn more on MITRE.

CVE ID

CVE-2026-42224

GHSA ID

GHSA-55wf-5m3q-6jjf

Source code

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