Description
When following a redirect to a publicly accessible web extension file, the URL may have been translated to the actual local path, leaking potentially sensitive information. This vulnerability affects Firefox < 111.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 111 | 111 |
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 22.04 LTS | mozjs78 +1 | No fix yet | — |
| Ubuntu 20.04 LTS | firefox | 111.0+build2-0ubuntu0.20.04.1 | USN-5954-1 |
| Ubuntu 20.04 LTS | mozjs52 +1 | No fix yet | — |
| Ubuntu 18.04 LTS | firefox | 111.0+build2-0ubuntu0.18.04.1 | USN-5954-1 |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLES 15 SP3 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLES 15 SP2 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLES 15 SP1 | MozillaFirefox | 102.9.0-150000.150.79.1 | SUSE-SU-2023:0728-1 |
| SLES 12 SP5 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SLES 12 SP2 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SLES for SAP 15 SP3 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLES for SAP 15 SP1 | MozillaFirefox | 102.9.0-150000.150.79.1 | SUSE-SU-2023:0728-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SLE Real Time 15 SP3 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLE HPC 15 SP3 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLE HPC 15 SP1 | MozillaFirefox | 102.9.0-150000.150.79.1 | SUSE-SU-2023:0728-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 111.0.1-1.1 | openSUSE-SU-2024:12839-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.4 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
Advisories 7
- USN-5954-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- openSUSE-SU-2024:12839-1 MozillaFirefox-111.0.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0835-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0728-1 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-2023:0763-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2023-0643 Mozilla Firefox: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 27, 2023