What is the CVSS score of CVE-2025-27404?

CVE-2025-27404 has a CVSS 3.1 base score of 7.6 (High). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.3%.

Which versions of Icinga Web 2 are affected by CVE-2025-27404?

Organizations using versions face notable risk from CVE-2025-27404, a cross-site scripting vulnerability rated CVSS 7.6.. A patch is available.

How to fix or mitigate CVE-2025-27404?

Within 7 days: Identify all affected systems running versions and apply vendor patches promptly. Verify anti-CSRF tokens and content security policies are enforced.

Icinga Web 2 CVE-2025-27404

HIGH

Cross-site Scripting (XSS) (CWE-79)

2025-03-26 security-advisories@github.com

XSS Icinga Web 2 Suse

7.6

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

7.6 HIGH

AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H

SUSE

HIGH

qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

High

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Patch released

Apr 05, 2026 - 14:30 nvd

Patch available

Analysis Generated

Mar 28, 2026 - 18:33 vuln.today

CVE Published

Mar 26, 2025 - 15:16 nvd

HIGH 7.6

DescriptionGitHub Advisory

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.

AnalysisAI

Icinga Web 2 is an open source monitoring web interface, framework and command-line interface. Rated high severity (CVSS 7.6), this vulnerability is remotely exploitable. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. 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. Affected products include: Icinga Icinga Web 2. Version information: prior to 2.11.5.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.