# CVE-2025-27609: Icinga Web 2 Vulnerable to Reflected XSS

> Attackers can inject arbitrary JavaScript into Icinga Web 2 via crafted requests, allowing them to act on behalf of victims.

- **Severity:** Low 1.1 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 26 Mar 2025
- **Updated:** 26 Mar 2025
- **Also known as:** DEBIAN-CVE-2025-27609, GHSA-5cjw-fwjc-8j38, UBUNTU-CVE-2025-27609

## What is CVE-2025-27609?

CVE-2025-27609 is a low-severity cross-site scripting vulnerability in icingaweb2, published on 26 Mar 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official 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.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2025-27609?

It affects 1 product.


Products: Icinga Icinga Web 2.

## How do I fix CVE-2025-27609?

Upgrade to a fixed version.

## Is CVE-2025-27609 being exploited?

There is no known exploitation of CVE-2025-27609 in the wild and no public exploit code.

## Other vulnerabilities in icingaweb2

- [CVE-2018-18249](https://insights.sbomify.com/CVE-2018-18249/): Code injection in n/a (critical 9.8)
- [CVE-2022-24715](https://insights.sbomify.com/CVE-2022-24715/): Arbitrary code execution for authenticated users in Icinga Web 2 (high 8.5)
- [CVE-2025-27404](https://insights.sbomify.com/CVE-2025-27404/): Icinga Web 2 DOM-based XSS vulnerability (high 7.7)
- [CVE-2025-27405](https://insights.sbomify.com/CVE-2025-27405/): Icinga Web 2 has XSS in embedded content (high 7.7)
- [CVE-2022-24716](https://insights.sbomify.com/CVE-2022-24716/): Path traversal in Icinga Web 2 (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-27609 and fix it if it is affected.

What it is: CVE-2025-27609 is a low-severity cross-site scripting vulnerability in icingaweb2, published on 26 Mar 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-27609 in the wild and no public exploit code.

Affected product: icingaweb2. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-27609/ (Markdown: https://insights.sbomify.com/CVE-2025-27609/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-27609
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-27609
- OSV: https://osv.dev/vulnerability/CVE-2025-27609

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-27609/
Summaries are generated and may contain mistakes; the official description above is the record.