# CVE-2023-2739: Gira HomeServer hslist cross site scripting

> Remote attackers can execute arbitrary scripts in the Gira HomeServer web interface via the hslist endpoint, potentially stealing user cookies.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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:** 16 May 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-r222-6q9g-76hh

## What is CVE-2023-2739?

CVE-2023-2739 is a medium-severity cross-site scripting vulnerability in Gira HomeServer, published on 16 May 2023. 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

A vulnerability classified as problematic was found in Gira HomeServer up to 4.12.0.220829 beta. This vulnerability affects unknown code of the file /hslist. The manipulation of the argument lst with the input debug%27"><img%20src=x%20onerror=alert(document.cookie)> leads to cross site scripting. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. VDB-229150 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

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

## Which versions are affected by CVE-2023-2739?

It affects 1 product.


Products: Gira Gira Home Server Firmware.

## How do I fix CVE-2023-2739?

No fix has been published for CVE-2023-2739 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-2739 being exploited?

There is no known exploitation of CVE-2023-2739 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-2739 and fix it if it is affected.

What it is: CVE-2023-2739 is a medium-severity cross-site scripting vulnerability in Gira HomeServer, published on 16 May 2023. 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-2023-2739 in the wild and no public exploit code.

Affected product: Gira HomeServer. 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-2023-2739/ (Markdown: https://insights.sbomify.com/CVE-2023-2739/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-2739
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-2739
- OSV: https://osv.dev/vulnerability/CVE-2023-2739

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-2739/
Summaries are generated and may contain mistakes; the official description above is the record.