CVE-2021-3619

Name: CVE-2021-3619
Creator: NVD / NIST
Published: 2021-07-22T19:15:09.03+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 0.58%

Last modified Jun 17, 2026

CVE-2021-3619 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. 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. EPSS estimates a 0.58% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.8/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.58%

43.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Rapid7	Velociraptor	< 0.6.0

References

https://github.com/Velocidex/velociraptor/pull/1118Patch, Third Party Advisory
https://github.com/Velocidex/velociraptor/releases/tag/v0.6.0Third Party Advisory
https://github.com/Velocidex/velociraptor/pull/1118Patch, Third Party Advisory
https://github.com/Velocidex/velociraptor/releases/tag/v0.6.0Third Party Advisory

Timeline

Published: Jul 22, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3619?

How severe is CVE-2021-3619?

CVE-2021-3619 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.58% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3619?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3619?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST