XSS in Icinga Web 2
CVE-2025-27405
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 URL that, once visited by any user, allows to embed arbitrary Javascript into Icinga Web 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.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.003 (24.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H.
Affected products
- Icinga Icinga_web_2
- Icinga Icingaweb2 — versions < 2.11.5, >= 2.12.0, < 2.12.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2025-27405?
- CVE-2025-27405 is a high-severity vulnerability in Icinga Web 2, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2025-03-26.
- How severe is CVE-2025-27405?
- High severity. CVSS v3 base score is 7.6 out of 10.
- Is CVE-2025-27405 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.