CVE-2016-9075

Mozilla: WebExtensions can access the mozAddonManager API and use it to gain elevated privileges (MFSA 2016-89)

Published 11 Jun 2018Modified 17 Jun 2026CWE 264

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Red Hat9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (medium), Ubuntu (medium).

Description

An issue where WebExtensions can use the mozAddonManager API to elevate privilege due to privileged pages being allowed in the permissions list. This allows a malicious extension to then install additional extensions without explicit user permission. This vulnerability affects Firefox < 50.

Affected packages and fixed versions

Source	Package	Fixed in
ubuntu 12.04	firefox	50.0+build2-0ubuntu0.12.04.2
ubuntu 14.04	firefox	50.0+build2-0ubuntu0.14.04.2
ubuntu 16.04	firefox	50.0+build2-0ubuntu0.16.04.2
ubuntu 16.10	firefox	50.0+build2-0ubuntu0.16.10.2

References

All 10 references

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Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.