Description
A website could have obscured the fullscreen notification by using a combination of <code>window.open</code>, fullscreen requests, <code>window.name</code> assignments, and <code>setInterval</code> calls. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 112 | 112 |
| Mozilla | Focus for Android | unspecified – < 112 | 112 |
| Mozilla | Firefox ESR | unspecified – < 102.10 | 102.10 |
| Mozilla | Firefox for Android | unspecified – < 112 | 112 |
| Mozilla | Thunderbird | unspecified – < 102.10 | 102.10 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | firefox-esr | 102.10.0esr-1 | — |
| Debian 14 | thunderbird | 1:102.10.0-1 | — |
| Debian 13 | firefox-esr | 102.10.0esr-1 | — |
| Debian 13 | thunderbird | 1:102.10.0-1 | — |
| Debian 12 | firefox-esr | 102.10.0esr-1 | — |
| Debian 12 | thunderbird | 1:102.10.0-1 | — |
| Debian 11 | firefox-esr | 102.10.0esr-1~deb11u1 | DSA-5385-1 |
| Debian 11 | thunderbird | 1:102.10.0-1~deb11u1 | DSA-5392-1 |
| Debian 10 | firefox-esr | 102.10.0esr-1~deb10u1 | DLA-3391-1 |
| Debian 10 | thunderbird | 1:102.10.0-1~deb10u1 | DLA-3400-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | mozjs78 +1 | No fix yet | — |
| Ubuntu 22.04 LTS | thunderbird | 1:102.10.0+build2-0ubuntu0.22.04.1 | USN-6015-1 |
| Ubuntu 20.04 LTS | firefox | 112.0+build2-0ubuntu0.20.04.1 | USN-6010-1 |
| Ubuntu 20.04 LTS | mozjs52 +1 | No fix yet | — |
| Ubuntu 20.04 LTS | thunderbird | 1:102.10.0+build2-0ubuntu0.20.04.1 | USN-6015-1 |
| Ubuntu 18.04 LTS | firefox | 112.0+build2-0ubuntu0.18.04.1 | USN-6010-1 |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
| Ubuntu 18.04 LTS | thunderbird | 1:102.10.0+build2-0ubuntu0.18.04.1 | USN-6015-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | firefox +1 | 102.10.0-1.el9_1 | RHSA-2023:1786 |
| RHEL 9 | thunderbird | 102.10.0-2.el9_1 | RHSA-2023:1809 |
| RHEL 8 | firefox | 102.10.0-1.el8_7 | RHSA-2023:1787 |
| RHEL 8 | thunderbird | 102.10.0-2.el8_7 | RHSA-2023:1802 |
| RHEL 7 | firefox | 102.10.0-1.el7_9 | RHSA-2023:1791 |
| RHEL 7 | thunderbird | 102.10.0-2.el7_9 | RHSA-2023:1806 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.0 EUS | firefox | 102.10.0-1.el9_0 | RHSA-2023:1785 |
| RHEL 9.0 EUS | thunderbird | 102.10.0-2.el9_0 | RHSA-2023:1810 |
| RHEL 8.6 EUS | firefox | 102.10.0-1.el8_6 | RHSA-2023:1788 |
| RHEL 8.6 EUS | thunderbird | 102.10.0-2.el8_6 | RHSA-2023:1811 |
| RHEL 8.4 EUS | firefox | 102.10.0-1.el8_4 | RHSA-2023:1790 |
| RHEL 8.4 EUS | thunderbird | 102.10.0-2.el8_4 | RHSA-2023:1804 |
| RHEL 8.2 TUS | firefox | 102.10.0-1.el8_2 | RHSA-2023:1789 |
| RHEL 8.2 TUS | thunderbird | 102.10.0-2.el8_2 | RHSA-2023:1805 |
| RHEL 8.2 E4S | firefox | 102.10.0-1.el8_2 | RHSA-2023:1789 |
| RHEL 8.2 E4S | thunderbird | 102.10.0-2.el8_2 | RHSA-2023:1805 |
| RHEL 8.2 AUS | firefox | 102.10.0-1.el8_2 | RHSA-2023:1789 |
| RHEL 8.2 AUS | thunderbird | 102.10.0-2.el8_2 | RHSA-2023:1805 |
| RHEL 8.1 E4S | firefox | 102.10.0-1.el8_1 | RHSA-2023:1792 |
| RHEL 8.1 E4S | thunderbird | 102.10.0-2.el8_1 | RHSA-2023:1803 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | firefox +1 | 102.10.0-1.el9_1.alma | ALSA-2023:1786 |
| AlmaLinux 9 | thunderbird | 102.10.0-2.el9_1.alma | ALSA-2023:1809 |
| AlmaLinux 8 | firefox | 102.10.0-1.el8_7.alma | ALSA-2023:1787 |
| AlmaLinux 8 | thunderbird | 102.10.0-2.el8_7.alma | ALSA-2023:1802 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | thunderbird | 102.10.0-2.el9_1 | RLSA-2023:1809 |
| Rocky Linux 8 | thunderbird | 102.10.0-2.el8_7 | RLSA-2023:1802 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SLES 15 SP4 | MozillaThunderbird | 102.10.1-150200.8.113.2 | SUSE-SU-2023:2064-1 |
| SLES 15 SP3 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SLES 15 SP2 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SLES 15 SP1 | MozillaFirefox | 102.10.0-150000.150.82.1 | SUSE-SU-2023:1817-1 |
| SLES 12 SP5 | MozillaFirefox | 102.10.0-112.156.1 | SUSE-SU-2023:1819-1 |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | MozillaFirefox | 102.10.0-112.156.1 | SUSE-SU-2023:1819-1 |
| SLES 12 SP2 | MozillaFirefox | 102.10.0-112.156.1 | SUSE-SU-2023:1819-1 |
| SLES for SAP 15 SP3 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SLES for SAP 15 SP1 | MozillaFirefox | 102.10.0-150000.150.82.1 | SUSE-SU-2023:1817-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 102.10.0-112.156.1 | SUSE-SU-2023:1819-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 102.10.0-112.156.1 | SUSE-SU-2023:1819-1 |
| SLE Real Time 15 SP3 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SLE HPC 15 SP3 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SLE HPC 15 SP1 | MozillaFirefox | 102.10.0-150000.150.82.1 | SUSE-SU-2023:1817-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox | 102.10.0-112.156.1 | SUSE-SU-2023:1819-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox | 102.10.0-112.156.1 | SUSE-SU-2023:1819-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 112.0.1-1.1 | openSUSE-SU-2024:12882-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 102.10.0-1.1 | openSUSE-SU-2024:12852-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.4 | MozillaFirefox | 102.10.0-150200.152.84.1 | SUSE-SU-2023:1855-1 |
| openSUSE Leap 15.4 | MozillaThunderbird | 102.10.1-150200.8.113.2 | SUSE-SU-2023:2064-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | firefox-esr | 102.10.0-r0 | — |
| Alpine v3.22 | firefox-esr | 102.10.0-r0 | — |
| Alpine v3.21 | firefox-esr | 102.10.0-r0 | — |
| Alpine v3.20 | firefox-esr | 102.10.0-r0 | — |
| Alpine v3.19 | firefox-esr | 102.10.0-r0 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.18 | firefox-esr | 102.10.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 102.10.0-1.amzn2.0.1 | ALAS2-2023-2028 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | firefox +1 | 102.10.0-1.0.1.el9_1 | ELSA-2023-1786 |
| Oracle Linux 9 | thunderbird | 102.10.0-2.0.1.el9_1 | ELSA-2023-1809 |
| Oracle Linux 8 | firefox | 102.10.0-1.0.1.el8_7 | ELSA-2023-1787 |
| Oracle Linux 8 | thunderbird | 102.10.0-2.0.1.el8_7 | ELSA-2023-1802 |
| Oracle Linux 7 | firefox | 102.10.0-1.0.1.el7_9 | ELSA-2023-1791 |
| Oracle Linux 7 | thunderbird | 102.10.0-2.0.1.el7_9 | ELSA-2023-1806 |
Advisories 44
- ALSA-2023:1786 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:1809 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:1802 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:1787 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2023-2031 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 11, 2026
- RHSA-2023:1811 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1809 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1810 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1806 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1804 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1805 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1803 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1792 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1802 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1790 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1791 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1789 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1787 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1788 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1785 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- RHSA-2023:1786 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 20, 2026
- USN-6015-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-6010-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5392-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5385-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3400-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3391-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2023:1809 Important: thunderbird security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2023:1802 Important: thunderbird security update Rocky Linux Security Advisories · Feb 4, 2026
- openSUSE-SU-2024:12852-1 MozillaThunderbird-102.10.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12882-1 MozillaFirefox-112.0.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2064-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1817-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1855-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14572-1 firefox-esr-128.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1819-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · May 2, 2025
- ALAS2-2023-2028 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jan 3, 2024
- WID-SEC-2023-0941 Mozilla Firefox und Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 27, 2023
- ELSA-2023-1802 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Apr 18, 2023
- ELSA-2023-1806 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 18, 2023
- ELSA-2023-1809 Important: thunderbird security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Apr 18, 2023
- ELSA-2023-1791 Important: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 17, 2023
- ELSA-2023-1786 Important: firefox security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Apr 14, 2023
- ELSA-2023-1787 Important: firefox security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Apr 14, 2023