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Vulnerabilities / CVE-2020-12390

critical

CVE-2020-12390

Mozilla: Incorrect serialization of nsIPrincipal.origin for IPv6 addresses

Published Modified CWE 502
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat9.8CVSS:3.1/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

Incorrect origin serialization of URLs with IPv6 addresses could lead to incorrect security checks. This vulnerability affects Firefox < 76.

Affected packages and fixed versions

SourcePackageFixed in
alpine 3.12firefox76.0-r0
alpine 3.13firefox76.0-r0
alpine 3.14firefox76.0-r0
alpine 3.15firefox76.0-r0
alpine 3.16firefox76.0-r0
alpine 3.17firefox76.0-r0
alpine 3.18firefox76.0-r0
alpine 3.19firefox76.0-r0
alpine 3.20firefox76.0-r0
alpine 3.21firefox, librewolf76.0-r0
alpine 3.22firefox, librewolf76.0-r0
alpine 3.23firefox, librewolf76.0-r0
Show all 30 entries from 27 sources
SourcePackageFixed in
alpine 3.12firefox76.0-r0
alpine 3.13firefox76.0-r0
alpine 3.14firefox76.0-r0
alpine 3.15firefox76.0-r0
alpine 3.16firefox76.0-r0
alpine 3.17firefox76.0-r0
alpine 3.18firefox76.0-r0
alpine 3.19firefox76.0-r0
alpine 3.20firefox76.0-r0
alpine 3.21firefox76.0-r0
alpine 3.21librewolf76.0-r0
alpine 3.22firefox76.0-r0
alpine 3.22librewolf76.0-r0
alpine 3.23firefox76.0-r0
alpine 3.23librewolf76.0-r0
alpine 3.24librewolf76.0-r0
alpine edgelibrewolf76.0-r0
Red Hatfirefoxno fix listed
ubuntu 16.04firefox76.0+build2-0ubuntu0.16.04.1
ubuntu 18.04firefox76.0+build2-0ubuntu0.18.04.1
ubuntu 19.10firefox76.0+build2-0ubuntu0.19.10.1
ubuntu 20.04firefox76.0+build2-0ubuntu0.20.04.1
ubuntu 20.10firefox76.0+build2-0ubuntu1
ubuntu 21.04firefox76.0+build2-0ubuntu1
ubuntu 21.10firefox76.0+build2-0ubuntu1
ubuntu 22.04firefox76.0+build2-0ubuntu1
ubuntu 22.10firefox76.0+build2-0ubuntu1
ubuntu 23.04firefox76.0+build2-0ubuntu1
ubuntu 23.10firefox76.0+build2-0ubuntu1
ubuntu 24.04firefox76.0+build2-0ubuntu1

References

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.