# CVE-2025-63588: Cross-site scripting in n/a

> Unauthenticated reflected XSS in CMSimpleXH allows attackers to execute arbitrary JavaScript, potentially stealing session cookies or credentials.

- **Severity:** High 7.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/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:** 6 Nov 2025
- **Updated:** 6 Nov 2025
- **Also known as:** GHSA-gj82-c7f3-xr2m

## What is CVE-2025-63588?

CVE-2025-63588 is a high-severity cross-site scripting vulnerability in n/a, published on 6 Nov 2025. 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 unauthenticated reflected cross-site scripting vulnerability in the query handling of CMSimpleXH allows remote attackers to inject and execute arbitrary JavaScript in a victim's browser via a crafted request (e.g., a maliciously crafted POST login). Successful exploitation may lead to theft of session cookies, credential disclosure, or other client-side impacts.

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

## Which versions are affected by CVE-2025-63588?

It affects 1 product.


Products: Cmsimple-Xh Cmsimple Xh.

## How do I fix CVE-2025-63588?

No fix has been published for CVE-2025-63588 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-63588 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-63588 exists.

Public exploit code:

- https://github.com/cybercrewinc/CVE-2025-63588 (github_poc): https://github.com/cybercrewinc/CVE-2025-63588

## Other vulnerabilities in n/a

- [CVE-2021-42645](https://insights.sbomify.com/CVE-2021-42645/): File upload in n/a (critical 10.0)
- [CVE-2021-47736](https://insights.sbomify.com/CVE-2021-47736/): CMSimple_XH 1.7.4 Authenticated Remote Code Execution via Content Editing (high 8.6)
- [CVE-2025-63589](https://insights.sbomify.com/CVE-2025-63589/): Cross-site scripting in n/a (high 7.1)
- [CVE-2024-34452](https://insights.sbomify.com/CVE-2024-34452/): Cross-site scripting in n/a (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-63588 and fix it if it is affected.

What it is: CVE-2025-63588 is a high-severity cross-site scripting vulnerability in n/a, published on 6 Nov 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-63588 exists.

Affected product: n/a. 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-2025-63588/ (Markdown: https://insights.sbomify.com/CVE-2025-63588/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-63588
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-63588
- OSV: https://osv.dev/vulnerability/CVE-2025-63588

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-63588/
Summaries are generated and may contain mistakes; the official description above is the record.