# CVE-2021-28924: Cross-site scripting in n/a

> An authenticated user can inject malicious scripts into the queries page, potentially leading to session hijacking or code execution.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 8 Apr 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-cmfg-x8c8-g6xw

## What is CVE-2021-28924?

CVE-2021-28924 is a medium-severity cross-site scripting vulnerability in n/a, published on 8 Apr 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Self Authenticated XSS in Nagios Network Analyzer before 2.4.2 via the nagiosna/groups/queries page.

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

## Which versions are affected by CVE-2021-28924?

It affects 1 product.


Products: Nagios Network Analyzer.

## How do I fix CVE-2021-28924?

No fix has been published for CVE-2021-28924 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-28924 being exploited?

There is no known exploitation of CVE-2021-28924 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [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-2023-7319](https://insights.sbomify.com/CVE-2023-7319/): Nagios Network Analyzer < 2024R1 XSS via Percentile Calculator Menu (medium 5.1)
- [CVE-2025-34278](https://insights.sbomify.com/CVE-2025-34278/): Nagios Network Analyzer < 2024R1 Source Groups / Percentile Calculator Menu Stored XSS (medium 5.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-28924 and fix it if it is affected.

What it is: CVE-2021-28924 is a medium-severity cross-site scripting vulnerability in n/a, published on 8 Apr 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-28924 in the wild and no public exploit code.

Affected product: n/a. 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-2021-28924/ (Markdown: https://insights.sbomify.com/CVE-2021-28924/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-28924
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-28924
- OSV: https://osv.dev/vulnerability/CVE-2021-28924

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-28924/
Summaries are generated and may contain mistakes; the official description above is the record.