CVE-2020-6804

XSS in Mozilla WebThings Gateway

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.

Remediation

Solution:

  • https://github.com/mozilla-iot/gateway/pull/2446

Workaround:

  • * Never share your gateway address publicly. * Never click on links which take you to your gateway, especially to the login page.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.32%
Third-Party Advisory github.com
Affected: Mozilla WebThings Gateway
Published at:
Updated at:

References

Link Tags
https://github.com/mozilla-iot/gateway/pull/2446 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2020-6804?
CVE-2020-6804 has been scored as a high severity vulnerability.
How to fix CVE-2020-6804?
To fix CVE-2020-6804: https://github.com/mozilla-iot/gateway/pull/2446
Is CVE-2020-6804 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-6804 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-6804?
CVE-2020-6804 affects Mozilla WebThings Gateway.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.