MEDIUM
Spoofing issue in the Privacy: Anti-Tracking component
Published Mar 24, 2026
6.5
MEDIUMCVSS 3.1
EPSS 0.34%
Description
Spoofing issue in the Privacy: Anti-Tracking component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
Affected products
No data.
OR
- < 149.0
- < 149.0
No data.
Red Hat Enterprise Linux 10
firefox
Not affected
Red Hat Enterprise Linux 10
rhel10/firefox-flatpak
Not affected
Red Hat Enterprise Linux 6
firefox
Not affected
Red Hat Enterprise Linux 7
firefox
Not affected
Red Hat Enterprise Linux 8
firefox
Not affected
Red Hat Enterprise Linux 9
firefox
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 10 | rhel10/firefox-flatpak | Not affected | n/a |
| Red Hat Enterprise Linux 6 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 7 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 8 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 9 | firefox | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Weaknesses (1)
References (9)
- https://access.redhat.com/security/cve/CVE-2026-4728 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=2013179 Permissions Required
- https://bugzilla.redhat.com/show_bug.cgi?id=2450717 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-14871 Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-4728
- https://www.cve.org/CVERecord?id=CVE-2026-4728
- https://www.mozilla.org/security/advisories/mfsa2026-20/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-20/#CVE-2026-4728
- https://www.mozilla.org/security/advisories/mfsa2026-23/ Vendor Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mozilla
Published Mar 24, 2026
Updated Apr 13, 2026
Reserved Mar 23, 2026
Link CVE-2026-4728
CISA Vulnrichment
Updated Mar 25, 2026
GitHub
No data