Description
A website could have obscured the fullscreen notification by using an option element by introducing lag via an expensive computational function. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 115.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 115 | 115 |
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | firefox | 115.0+build2-0ubuntu0.20.04.3 | USN-6201-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLES 15 SP5 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLES 15 SP4 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLES 15 SP4 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLES 15 SP3 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLES 15 SP3 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLES 15 SP2 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLES 15 SP2 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLES 15 SP1 | MozillaFirefox | 115.0-150000.150.91.1 | SUSE-SU-2023:2849-1 |
| SLES 15 SP1 | MozillaFirefox-branding-SLE | 115-150000.4.25.1 | SUSE-SU-2023:2849-1 |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | MozillaFirefox | 115.0-112.165.1 | SUSE-SU-2023:2850-1 |
| SLES 12 SP5 | MozillaFirefox-branding-SLE | 115-35.12.2 | SUSE-SU-2023:2850-1 |
| SLES 12 SP4 | MozillaFirefox | 115.0-112.165.1 | SUSE-SU-2023:2850-1 |
| SLES 12 SP4 | MozillaFirefox-branding-SLE | 115-35.12.2 | SUSE-SU-2023:2850-1 |
| SLES 12 SP2 | MozillaFirefox | 115.0-112.165.1 | SUSE-SU-2023:2850-1 |
| SLES 12 SP2 | MozillaFirefox-branding-SLE | 115-35.12.2 | SUSE-SU-2023:2850-1 |
| SLES for SAP 15 SP3 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLES for SAP 15 SP3 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLES for SAP 15 SP2 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLES for SAP 15 SP1 | MozillaFirefox | 115.0-150000.150.91.1 | SUSE-SU-2023:2849-1 |
| SLES for SAP 15 SP1 | MozillaFirefox-branding-SLE | 115-150000.4.25.1 | SUSE-SU-2023:2849-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 115.0-112.165.1 | SUSE-SU-2023:2850-1 |
| SLES for SAP 12 SP5 | MozillaFirefox-branding-SLE | 115-35.12.2 | SUSE-SU-2023:2850-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 115.0-112.165.1 | SUSE-SU-2023:2850-1 |
| SLES for SAP 12 SP4 | MozillaFirefox-branding-SLE | 115-35.12.2 | SUSE-SU-2023:2850-1 |
| SLE Real Time 15 SP3 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLE Real Time 15 SP3 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLE HPC 15 SP3 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLE HPC 15 SP3 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SLE HPC 15 SP2 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SLE HPC 15 SP1 | MozillaFirefox | 115.0-150000.150.91.1 | SUSE-SU-2023:2849-1 |
| SLE HPC 15 SP1 | MozillaFirefox-branding-SLE | 115-150000.4.25.1 | SUSE-SU-2023:2849-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox | 115.0-112.165.1 | SUSE-SU-2023:2850-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox-branding-SLE | 115-35.12.2 | SUSE-SU-2023:2850-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox | 115.0-112.165.1 | SUSE-SU-2023:2850-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox-branding-SLE | 115-35.12.2 | SUSE-SU-2023:2850-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 115.0-1.1 | openSUSE-SU-2024:13037-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.5 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| openSUSE Leap 15.5 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
| openSUSE Leap 15.4 | MozillaFirefox | 115.0-150200.152.93.1 | SUSE-SU-2023:2886-1 |
| openSUSE Leap 15.4 | MozillaFirefox-branding-SLE | 115-150200.9.13.1 | SUSE-SU-2023:2886-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | firefox-esr | 115.0-r0 | — |
| Alpine v3.22 | firefox-esr | 115.0-r0 | — |
| Alpine v3.21 | firefox-esr | 115.0-r0 | — |
| Alpine v3.20 | firefox-esr | 115.0-r0 | — |
| Alpine v3.19 | firefox-esr | 115.0-r0 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.18 | firefox-esr | 115.0-r0 | — |
Advisories 8
- WID-SEC-2023-2031 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 11, 2026
- USN-6201-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- SUSE-SU-2023:2849-1 Security update for MozillaFirefox, MozillaFirefox-branding-SLE SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2886-1 Security update for MozillaFirefox, MozillaFirefox-branding-SLE SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13037-1 MozillaFirefox-115.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2850-1 Security update for MozillaFirefox, MozillaFirefox-branding-SLE 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
- WID-SEC-2023-1663 Mozilla Firefox und Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 18, 2024