CVE-2018-5113

Description

The "browser.identity.launchWebAuthFlow" function of WebExtensions is only allowed to load content over "https:" but this requirement was not properly enforced. This can potentially allow privileged pages to be loaded by the extension. This vulnerability affects Firefox < 58.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.55% Top 20%
Vendor Advisory ubuntu.com Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
http://www.securitytracker.com/id/1040270 vdb entry third party advisory
https://usn.ubuntu.com/3544-1/ third party advisory vendor advisory
http://www.securityfocus.com/bid/102786 vdb entry third party advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1425267 issue tracking permissions required
https://www.mozilla.org/security/advisories/mfsa2018-02/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-5113?
CVE-2018-5113 has been scored as a high severity vulnerability.
How to fix CVE-2018-5113?
To fix CVE-2018-5113, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-5113 being actively exploited in the wild?
It is possible that CVE-2018-5113 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-5113?
CVE-2018-5113 affects Mozilla Firefox.
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.