# CVE-2022-35739: Cross-site scripting in n/a

> Attackers can inject malicious CSS into device icons, potentially leading to data exposure or security bypasses, though not full code execution.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 Oct 2022
- **Updated:** 7 May 2025
- **Also known as:** GHSA-c65j-wcvh-77gc

## What is CVE-2022-35739?

CVE-2022-35739 is a medium-severity cross-site scripting vulnerability in n/a, published on 25 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

PRTG Network Monitor through 22.2.77.2204 does not prevent custom input for a device’s icon, which can be modified to insert arbitrary content into the style tag for that device. When the device page loads, the arbitrary Cascading Style Sheets (CSS) data is inserted into the style tag, loading malicious content. Due to PRTG Network Monitor preventing “characters, and from modern browsers disabling JavaScript support in style tags, this vulnerability could not be escalated into a Cross-Site Scripting vulnerability.

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

## Which versions are affected by CVE-2022-35739?

It affects 1 product.


Products: Paessler Prtg Network Monitor.

## How do I fix CVE-2022-35739?

No fix has been published for CVE-2022-35739 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-35739 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-35739 exists.

## Other vulnerabilities in n/a

- [CVE-2018-19410](https://insights.sbomify.com/CVE-2018-19410/): Paessler PRTG Network Monitor Local File Inclusion (critical 9.8, exploited in the wild)
- [CVE-2018-9276](https://insights.sbomify.com/CVE-2018-9276/): Paessler PRTG Network Monitor OS Command Injection (high 7.2, exploited in the wild)
- [CVE-2020-10374](https://insights.sbomify.com/CVE-2020-10374/): Command injection in n/a (critical 9.8)
- [CVE-2023-51630](https://insights.sbomify.com/CVE-2023-51630/): Paessler PRTG Network Monitor Cross-Site Scripting Authentication Bypass Vulnerability (high 8.8)
- [CVE-2023-31452](https://insights.sbomify.com/CVE-2023-31452/): Cross-site request forgery in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-35739 and fix it if it is affected.

What it is: CVE-2022-35739 is a medium-severity cross-site scripting vulnerability in n/a, published on 25 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-35739 exists.

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-2022-35739/ (Markdown: https://insights.sbomify.com/CVE-2022-35739/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-35739
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-35739
- OSV: https://osv.dev/vulnerability/CVE-2022-35739

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-35739/
Summaries are generated and may contain mistakes; the official description above is the record.