# CVE-2021-3619: Rapid7 Velociraptor Notebooks Authenticated Persistent XSS

> Authenticated users can inject persistent XSS via malicious uploads, potentially executing code or taking over accounts in Velociraptor.

- **Severity:** Low 3.5 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 17 Aug 2021
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-m6q8-qh76-5hfr

## What is CVE-2021-3619?

CVE-2021-3619 is a low-severity cross-site scripting vulnerability in Rapid7 Velociraptor, published on 17 Aug 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

Rapid7 Velociraptor 0.5.9 and prior is vulnerable to a post-authentication persistent cross-site scripting (XSS) issue, where an authenticated user could abuse MIME filetype sniffing to embed executable code on a malicious upload. This issue was fixed in version 0.6.0. Note that login rights to Velociraptor is nearly always reserved for trusted and verified users with IT security backgrounds.

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

## Which versions are affected by CVE-2021-3619?

It affects 1 product.


Products: Rapid7 Velociraptor.

## How do I fix CVE-2021-3619?

No fix has been published for CVE-2021-3619 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-3619 being exploited?

There is no known exploitation of CVE-2021-3619 in the wild and no public exploit code.

## Other vulnerabilities in Rapid7 Velociraptor

- [CVE-2023-0242](https://insights.sbomify.com/CVE-2023-0242/): Insufficient permission check in the VQL copy() function (high 8.8)
- [CVE-2023-5950](https://insights.sbomify.com/CVE-2023-5950/): Rapid7 Velociraptor Reflected XSS (high 8.6)
- [CVE-2026-5329](https://insights.sbomify.com/CVE-2026-5329/): Rapid7 Velociraptor Improper Input Validation in Client Message Handler (high 8.5)
- [CVE-2026-6290](https://insights.sbomify.com/CVE-2026-6290/): Velociraptor Query() Plugin Misapplies Permissions To Orgs (high 8.0)
- [CVE-2025-14728](https://insights.sbomify.com/CVE-2025-14728/): Rapid7 Velociraptor Directory Traversal Vulnerability (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-3619 and fix it if it is affected.

What it is: CVE-2021-3619 is a low-severity cross-site scripting vulnerability in Rapid7 Velociraptor, published on 17 Aug 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-3619 in the wild and no public exploit code.

Affected product: Rapid7 Velociraptor. 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-2021-3619/ (Markdown: https://insights.sbomify.com/CVE-2021-3619/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-3619
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-3619
- OSV: https://osv.dev/vulnerability/CVE-2021-3619

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-3619/
Summaries are generated and may contain mistakes; the official description above is the record.