Description

Icinga Web 2 is an open source monitoring web interface, framework and command-line interface. A vulnerability in versions prior to 2.11.5 and 2.12.13 allows an attacker to craft a request that, once transmitted to a victim's Icinga Web, allows to embed arbitrary Javascript into it and to act on behalf of that user. This issue has been resolved in versions 2.11.5 and 2.12.3 of Icinga Web 2. As a workaround, those who have Icinga Web 2.12.2 may enable a content security policy in the application settings. Any modern browser with a working CORS implementation also sufficiently guards against the vulnerability.

Classification

CVE ID: CVE-2025-27609

CVSS Base Severity: LOW

CVSS Base Score: 1.1

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U

Affected Products

Vendor: Icinga

Product: icingaweb2

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.08% (probability of being exploited)

EPSS Percentile: 25.28% (scored less or equal to compared to others)

EPSS Date: 2025-04-18 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-27609
https://github.com/Icinga/icingaweb2/security/advisories/GHSA-5cjw-fwjc-8j38
https://github.com/Icinga/icingaweb2/releases/tag/v2.11.5
https://github.com/Icinga/icingaweb2/releases/tag/v2.12.3

Timeline