CVE-2020-6804

Name: CVE-2020-6804
Creator: NVD / NIST
Published: 2020-02-28T23:15:11.543+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.75%

Last modified Jun 17, 2026

CVE-2020-6804 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. A reflected XSS vulnerability exists within the gateway, allowing an attacker to craft a specialized URL which could steal the user's authentication token. When combined with CVE-2020-6803, an attacker could fully compromise the system.. EPSS estimates a 0.75% chance of exploitation in the next 30 days.

Description

A reflected XSS vulnerability exists within the gateway, allowing an attacker to craft a specialized URL which could steal the user's authentication token. When combined with CVE-2020-6803, an attacker could fully compromise the system.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.75%

50.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mozilla	Webthings Gateway	>= 0.3.0, < 0.12.0

References

https://github.com/mozilla-iot/gateway/pull/2446Patch, Third Party Advisory
https://github.com/mozilla-iot/gateway/pull/2446Patch, Third Party Advisory

Timeline

Published: Feb 28, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-6804?

How severe is CVE-2020-6804?

CVE-2020-6804 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.75% probability of exploitation in the next 30 days.

How do I fix CVE-2020-6804?

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-2020-6804?

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

Scan your code now

Source: NVD / NIST