# CVE-2023-0829: Cross-Site Scripting (XSS) vulnerability in Plesk

> A malicious subscription owner can compromise the server via XSS if an administrator visits a specific page related to the subscription.

- **Severity:** High 8.8 (`CVSS:3.1/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:** No
- **Published:** 20 Sep 2023
- **Updated:** 24 Sep 2024
- **Also known as:** GHSA-f96r-wmpc-994r

## What is CVE-2023-0829?

CVE-2023-0829 is a high-severity cross-site scripting vulnerability in Plesk, published on 20 Sep 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Plesk 17.0 through 18.0.31 version, is vulnerable to a Cross-Site Scripting. A malicious subscription owner (either a customer or an additional user), can fully compromise the server if an administrator visits a certain page in Plesk related to the malicious subscription.

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

## Which versions are affected by CVE-2023-0829?

It affects 1 product.


Products: Plesk Plesk.

## How do I fix CVE-2023-0829?

No fix has been published for CVE-2023-0829 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-0829 being exploited?

There is no known exploitation of CVE-2023-0829 in the wild and no public exploit code.

## Other vulnerabilities in Plesk

- [CVE-2025-66430](https://insights.sbomify.com/CVE-2025-66430/): Plesk 18.0 has Incorrect Access Control. (critical 9.1)
- [CVE-2021-45008](https://insights.sbomify.com/CVE-2021-45008/): Privilege escalation in n/a (high 8.8)
- [CVE-2021-45007](https://insights.sbomify.com/CVE-2021-45007/): Cross-site request forgery in n/a (medium 6.5)
- [CVE-2023-4931](https://insights.sbomify.com/CVE-2023-4931/): Uncontrolled search path element vulnerability in Plesk (medium 6.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-0829 and fix it if it is affected.

What it is: CVE-2023-0829 is a high-severity cross-site scripting vulnerability in Plesk, published on 20 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-2023-0829 in the wild and no public exploit code.

Affected product: Plesk. 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-2023-0829/ (Markdown: https://insights.sbomify.com/CVE-2023-0829/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-0829
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-0829
- OSV: https://osv.dev/vulnerability/CVE-2023-0829

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-0829/
Summaries are generated and may contain mistakes; the official description above is the record.