# CVE-2019-10670: Cross-site scripting in n/a

> Attacker can inject malicious JavaScript into LibreNMS web interface via unsafe data handling, 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:** 9 Sep 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-q48c-mmg3-2hww

## What is CVE-2019-10670?

CVE-2019-10670 is a medium-severity cross-site scripting vulnerability in Librenms Librenms, published on 9 Sep 2019. 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

An issue was discovered in LibreNMS through 1.47. Many of the scripts rely on the function mysqli_escape_real_string for filtering data. However, this is particularly ineffective when returning user supplied input in an HTML or a JavaScript context, resulting in unsafe data being injected into these contexts, leading to attacker controlled JavaScript executing in the browser. One example of this is the string parameter in html/pages/inventory.inc.php.

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

## Which versions are affected by CVE-2019-10670?

It affects 1 product.


Products: Librenms Librenms.

## How do I fix CVE-2019-10670?

No fix has been published for CVE-2019-10670 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-10670 being exploited?

There is no known exploitation of CVE-2019-10670 in the wild and no public exploit code.

## Other vulnerabilities in Librenms Librenms

- [CVE-2023-4982](https://insights.sbomify.com/CVE-2023-4982/): Cross-site Scripting (XSS) - Stored in librenms/librenms (critical 9.8)
- [CVE-2022-29712](https://insights.sbomify.com/CVE-2022-29712/): Command injection in librenms (critical 9.8)
- [CVE-2021-44278](https://insights.sbomify.com/CVE-2021-44278/): Path traversal in librenms/librenms (critical 9.8)
- [CVE-2019-10665](https://insights.sbomify.com/CVE-2019-10665/): LibreNMS Information Disclosure (critical 9.8)
- [CVE-2018-20434](https://insights.sbomify.com/CVE-2018-20434/): LibreNMS arbitrary OS commands execution (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-10670 and fix it if it is affected.

What it is: CVE-2019-10670 is a medium-severity cross-site scripting vulnerability in Librenms Librenms, published on 9 Sep 2019. 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-2019-10670 in the wild and no public exploit code.

Affected product: Librenms Librenms. 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-2019-10670/ (Markdown: https://insights.sbomify.com/CVE-2019-10670/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-10670
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-10670
- OSV: https://osv.dev/vulnerability/CVE-2019-10670

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-10670/
Summaries are generated and may contain mistakes; the official description above is the record.