# CVE-2025-34278: Nagios Network Analyzer < 2024R1 Source Groups / Percentile Calculator Menu Stored XSS

> Stored XSS in Nagios Network Analyzer allows attackers to inject scripts that execute in victims' browsers, potentially leading to session hijacking or malicious actions.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 30 Oct 2025
- **Updated:** 17 Nov 2025
- **Also known as:** GHSA-75j9-fg6j-3gvg

## What is CVE-2025-34278?

CVE-2025-34278 is a medium-severity cross-site scripting vulnerability in Nagios Network Analyzer, published on 30 Oct 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Nagios Network Analyzer versions prior to 2024R1 contain a stored cross-site scripting (XSS) vulnerability in the Source Groups page (percentile calculator menu). An attacker can supply a malicious payload which is stored by the application and later rendered in the context of other users. When a victim views the affected page the injected script executes in the victim's browser context.

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

## Which versions are affected by CVE-2025-34278?

It affects 1 product.


Products: Nagios Network Analyzer.

## How do I fix CVE-2025-34278?

No fix has been published for CVE-2025-34278 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-34278 being exploited?

There is no known exploitation of CVE-2025-34278 in the wild and no public exploit code.

## Other vulnerabilities in Nagios Network Analyzer

- [CVE-2021-28925](https://insights.sbomify.com/CVE-2021-28925/): SQL injection in n/a (critical 9.8)
- [CVE-2025-34280](https://insights.sbomify.com/CVE-2025-34280/): Nagios Network Analyzer < 2024R2.0.1 RCE in LDAP Certificate Removal Function (high 8.6)
- [CVE-2025-28059](https://insights.sbomify.com/CVE-2025-28059/): Auth bypass in n/a (high 7.5)
- [CVE-2021-28924](https://insights.sbomify.com/CVE-2021-28924/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2023-7319](https://insights.sbomify.com/CVE-2023-7319/): Nagios Network Analyzer < 2024R1 XSS via Percentile Calculator Menu (medium 5.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-34278 and fix it if it is affected.

What it is: CVE-2025-34278 is a medium-severity cross-site scripting vulnerability in Nagios Network Analyzer, published on 30 Oct 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-34278 in the wild and no public exploit code.

Affected product: Nagios Network Analyzer. 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-2025-34278/ (Markdown: https://insights.sbomify.com/CVE-2025-34278/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-34278
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-34278
- OSV: https://osv.dev/vulnerability/CVE-2025-34278

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-34278/
Summaries are generated and may contain mistakes; the official description above is the record.