JavaScript Injection Vulnerability in Icinga Web 2 by Icinga

CVE-2025-27609

What is CVE-2025-27609?

Icinga Web 2, an open-source monitoring solution, is susceptible to a JavaScript injection vulnerability in versions prior to 2.11.5 and 2.12.3. This flaw allows an attacker to send specially crafted requests that can embed malicious JavaScript into the application, potentially enabling unauthorized actions under the guise of the victim's session. Users are encouraged to upgrade to 2.11.5 or 2.12.3 to mitigate risks. As a temporary measure, enabling a content security policy or using modern browsers with proper CORS implementation can help protect against exploitation.

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