# CVE-2023-4981: Cross-site Scripting (XSS) - DOM in librenms/librenms

> An attacker can execute arbitrary scripts in the victim's browser via DOM-based XSS in LibreNMS, potentially leading to session hijacking or data theft.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 15 Sep 2023
- **Updated:** 20 Sep 2024
- **Also known as:** GHSA-5jjm-qp48-qp86

## What is CVE-2023-4981?

CVE-2023-4981 is a high-severity cross-site scripting vulnerability in Librenms Librenms, published on 15 Sep 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Cross-site Scripting (XSS) - DOM in GitHub repository librenms/librenms prior to 23.9.0.

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

## Which versions are affected by CVE-2023-4981?

2 open source packages ship an affected version, including librenms/librenms. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `librenms/librenms` | Packagist | All versions | 23.9.0 |
| `librenms/librenms` | Packagist | All versions | 23.9.0 |

Products: Librenms Librenms.

## How do I fix CVE-2023-4981?

Upgrade librenms/librenms to 23.9.0 or later.

## Is CVE-2023-4981 being exploited?

There is no known exploitation of CVE-2023-4981 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-2023-4981 and fix it if it is affected.

What it is: CVE-2023-4981 is a high-severity cross-site scripting vulnerability in Librenms Librenms, published on 15 Sep 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-4981 in the wild and no public exploit code.

Affected packages and fixed versions:
- librenms/librenms (Packagist): affected all versions; fixed in 23.9.0
- librenms/librenms (Packagist): affected all versions; fixed in 23.9.0

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-2023-4981/ (Markdown: https://insights.sbomify.com/CVE-2023-4981/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-4981
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-4981
- OSV: https://osv.dev/vulnerability/CVE-2023-4981

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-4981/
Summaries are generated and may contain mistakes; the official description above is the record.