CVE-2026-42224: ipl/web XSS Vulnerability Impacts Icinga Web
A high-severity Cross-Site Scripting (XSS) vulnerability, tracked as CVE-2026-42224, has been identified in ipl/web, a set of common web components used in PHP projects. The National Vulnerability Database reports this flaw, present in versions prior to 0.13.1, allows attackers to inject malicious JavaScript into a victim’s browser. This script then executes within the context of Icinga Web.
The attack scenario requires a victim to visit a specially crafted website. The National Vulnerability Database notes that victims may not immediately detect the compromise. Given the ipl/web components are foundational for PHP projects, this vulnerability carries a CVSS score of 7.6 (High) due to the potential for significant impact on confidentiality, integrity, and availability, as indicated by its vector CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H.
This XSS vulnerability, categorized as CWE-79, underscores the persistent risk of client-side injection flaws. Defenders must prioritize patching. The issue has been addressed in version 0.13.1 of ipl/web. Organizations leveraging Icinga Web or other PHP projects dependent on ipl/web must update immediately to mitigate this threat.
What This Means For You
- If your organization uses Icinga Web or any PHP project relying on `ipl/web` components, you are exposed to CVE-2026-42224. An attacker can execute code in your users' browsers. Patch `ipl/web` to version 0.13.1 immediately to prevent XSS attacks and audit for any suspicious web traffic or user activity originating from Icinga Web instances.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-42224: ipl/web XSS - Suspicious URI Query
title: CVE-2026-42224: ipl/web XSS - Suspicious URI Query
id: scw-2026-05-08-ai-1
status: experimental
level: high
description: |
Detects attempts to exploit CVE-2026-42224 by looking for common XSS payload patterns within the URI query string of web requests targeting ipl/web components. This indicates an attacker trying to inject malicious JavaScript into the Icinga Web application.
author: SCW Feed Engine (AI-generated)
date: 2026-05-08
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-42224/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri-query|contains:
- 'script%3C/script%3E'
- 'alert(document.domain)'
- 'onerror=alert'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-42224 | XSS | ipl/web component in php projects |
| CVE-2026-42224 | XSS | ipl/web versions prior to 0.13.1 |
| CVE-2026-42224 | XSS | Malicious Javascript injection in Icinga Web context |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 09, 2026 at 02:16 UTC |
This content was AI-rewritten and enriched by Shimi's Cyber World based on the original source. All intellectual property rights remain with the original author.
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