# CVE-2024-43793: Halo's editor has a stored XSS vulnerability

> Attackers can inject malicious scripts into Halo's editor, leading to Cross-Site Scripting attacks against users.

- **Severity:** Medium 6.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Sep 2024
- **Updated:** 11 Sep 2024
- **Also known as:** GHSA-28x9-hppj-m537

## What is CVE-2024-43793?

CVE-2024-43793 is a medium-severity cross-site scripting vulnerability in halo-dev halo, published on 11 Sep 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Halo is an open source website building tool. A security vulnerability has been identified in versions prior to 2.19.0 of the Halo project. This vulnerability allows an attacker to execute malicious scripts in the user's browser through specific HTML and JavaScript code, potentially leading to a Cross-Site Scripting (XSS) attack. This vulnerability is fixed in 2.19.0.

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

## Which versions are affected by CVE-2024-43793?

It affects 1 product.


Products: Halo Halo.

## How do I fix CVE-2024-43793?

No fix has been published for CVE-2024-43793 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-43793 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-43793 exists.

## Other vulnerabilities in halo-dev halo

- [CVE-2022-32994](https://insights.sbomify.com/CVE-2022-32994/): File upload in n/a (critical 9.8)
- [CVE-2022-32995](https://insights.sbomify.com/CVE-2022-32995/): Server-side request forgery in n/a (critical 9.8)
- [CVE-2020-18980](https://insights.sbomify.com/CVE-2020-18980/): Code injection in n/a (critical 9.8)
- [CVE-2020-21522](https://insights.sbomify.com/CVE-2020-21522/): Path traversal in n/a (critical 9.8)
- [CVE-2020-21523](https://insights.sbomify.com/CVE-2020-21523/): Code injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-43793 and fix it if it is affected.

What it is: CVE-2024-43793 is a medium-severity cross-site scripting vulnerability in halo-dev halo, published on 11 Sep 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-43793 exists.

Affected product: halo-dev halo. 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-2024-43793/ (Markdown: https://insights.sbomify.com/CVE-2024-43793/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-43793
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-43793
- OSV: https://osv.dev/vulnerability/CVE-2024-43793

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From sbomify Insights: https://insights.sbomify.com/CVE-2024-43793/
Summaries are generated and may contain mistakes; the official description above is the record.