# CVE-2025-8535: cronoh NanoVault xrb URL main.js executeJavaScript cross site scripting

> Remote attackers can execute arbitrary JavaScript in the NanoVault desktop wallet via the xrb URL handler, potentially compromising user funds.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 5 Aug 2025
- **Updated:** 5 Aug 2025
- **Also known as:** GHSA-c3vg-2hq4-9phg

## What is CVE-2025-8535?

CVE-2025-8535 is a medium-severity cross-site scripting vulnerability in cronoh NanoVault, published on 5 Aug 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A vulnerability, which was classified as problematic, has been found in cronoh NanoVault up to 1.2.1. This issue affects the function executeJavaScript of the file /main.js of the component xrb URL Handler. The manipulation leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2025-8535?

It affects 1 product.


Products: Metaclinic Nanovault.

## How do I fix CVE-2025-8535?

No fix has been published for CVE-2025-8535 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-8535 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8535 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-8535 and fix it if it is affected.

What it is: CVE-2025-8535 is a medium-severity cross-site scripting vulnerability in cronoh NanoVault, published on 5 Aug 2025. Any signed-in user can exploit it over the network, 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-2025-8535 exists.

Affected product: cronoh NanoVault. 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-2025-8535/ (Markdown: https://insights.sbomify.com/CVE-2025-8535/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-8535
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-8535
- OSV: https://osv.dev/vulnerability/CVE-2025-8535

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-8535/
Summaries are generated and may contain mistakes; the official description above is the record.