Description
Firefox normally asks for confirmation before asking the operating system to find an application to handle a scheme that the browser does not support. It did not ask before doing so for the Usenet-related schemes news: and snews:. Since most operating systems don't have a trusted newsreader installed by default, an unscrupulous program that the user downloaded could register itself as a handler. The website that served the application download could then launch that application at will. This vulnerability affects Firefox < 130, Firefox ESR < 128.2, and Firefox ESR < 115.15.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 130 | 130 |
| Mozilla | Firefox ESR | unspecified – < 128.2, unspecified – < 115.15 | 128.2 |
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 | 115.15.0esr-1 | — |
| Debian 13 | firefox-esr | 115.15.0esr-1 | — |
| Debian 12 | firefox-esr | 115.15.0esr-1~deb12u1 | DSA-5765-1 |
| Debian 12 | thunderbird | 1:115.15.0-1~deb12u1 | DSA-5767-1 |
| Debian 11 | firefox-esr | 115.15.0esr-1~deb11u1 | DLA-3869-1 |
| Debian 11 | thunderbird | 1:115.15.0-1~deb11u1 | DLA-3882-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | mozjs102 +1 | No fix yet | — |
| Ubuntu 22.04 LTS | mozjs78 +2 | No fix yet | — |
| Ubuntu 20.04 LTS | firefox | 130.0+build2-0ubuntu0.20.04.1 | USN-6992-1 |
| Ubuntu 20.04 LTS | mozjs52 +1 | No fix yet | — |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | firefox +1 | 128.2.0-1.el9_4 | RHSA-2024:6681 |
| RHEL 8 | firefox | 128.2.0-1.el8_10 | RHSA-2024:6682 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.6 TUS | firefox | 128.2.0-1.el8_6 | RHSA-2024:6892 |
| RHEL 8.6 E4S | firefox | 128.2.0-1.el8_6 | RHSA-2024:6892 |
| RHEL 8.6 AUS | firefox | 128.2.0-1.el8_6 | RHSA-2024:6892 |
| RHEL 8.4 TUS | firefox | 128.2.0-1.el8_4 | RHSA-2024:6891 |
| RHEL 8.4 E4S | firefox | 128.2.0-1.el8_4 | RHSA-2024:6891 |
| RHEL 8.4 AUS | firefox | 128.2.0-1.el8_4 | RHSA-2024:6891 |
| RHEL 7 ELS | firefox | 128.2.0-1.el7_9 | RHSA-2024:6838 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | firefox +1 | 128.2.0-1.el9_4.alma.1 | ALSA-2024:6681 |
| AlmaLinux 8 | firefox | 128.2.0-1.el8_10.alma.1 | ALSA-2024:6682 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | firefox | 128.2.0-1.el9_4.0.1 | RLSA-2024:6681 |
| Rocky Linux 8 | firefox | 128.2.0-1.el8_10 | RLSA-2024:6682 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | MozillaFirefox | 128.2.0-150200.152.149.1 | SUSE-SU-2024:3157-1 |
| SLES 15 SP5 | MozillaFirefox | 128.2.0-150200.152.149.1 | SUSE-SU-2024:3157-1 |
| SLES 15 SP4 | MozillaFirefox | 128.2.0-150200.152.149.1 | SUSE-SU-2024:3157-1 |
| SLES 15 SP3 | MozillaFirefox | 128.2.0-150200.152.149.1 | SUSE-SU-2024:3157-1 |
| SLES 15 SP2 | MozillaFirefox | 128.2.0-150200.152.149.1 | SUSE-SU-2024:3157-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | MozillaFirefox | 128.2.0-112.225.1 | SUSE-SU-2024:3152-1 |
| SLES for SAP 15 SP4 | MozillaFirefox | 128.2.0-150200.152.149.1 | SUSE-SU-2024:3157-1 |
| SLES for SAP 15 SP3 | MozillaFirefox | 128.2.0-150200.152.149.1 | SUSE-SU-2024:3157-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 128.2.0-150200.152.149.1 | SUSE-SU-2024:3157-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 128.2.0-112.225.1 | SUSE-SU-2024:3152-1 |
| SLE HPC 15 SP4 | MozillaFirefox | 128.2.0-150200.152.149.1 | SUSE-SU-2024:3157-1 |
| SLE HPC 15 SP3 | MozillaFirefox | 128.2.0-150200.152.149.1 | SUSE-SU-2024:3157-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 128.2.0-150200.152.149.1 | SUSE-SU-2024:3157-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox | 128.2.0-150200.152.149.1 | SUSE-SU-2024:3157-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 130.0.1-1.1 | openSUSE-SU-2024:14358-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Tumbleweed | mozjs128 | 128.2.0-1.1 | openSUSE-SU-2024:14369-1 |
| openSUSE Leap 15.6 | MozillaFirefox | 128.2.0-150200.152.149.1 | SUSE-SU-2024:3157-1 |
| openSUSE Leap 15.5 | MozillaFirefox | 128.2.0-150200.152.149.1 | SUSE-SU-2024:3157-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | firefox +1 | 128.2.0-1.0.2.el9_4 | ELSA-2024-6681 |
| Oracle Linux 8 | firefox | 128.2.0-1.0.2.el8_10 | ELSA-2024-6682 |
| Oracle Linux 7 | firefox | 128.2.0-1.0.1.el7_9 | ELSA-2024-6838 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | firefox | 130.0-r0 | — |
Advisories 23
- ALSA-2024:6682 Important: firefox security update AlmaLinux Security Advisories · Nov 6, 2026
- ALSA-2024:6681 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- USN-6992-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- RHSA-2024:6891 Red Hat Security Advisory: firefox update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:6892 Red Hat Security Advisory: firefox update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:6838 Red Hat Security Advisory: firefox update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:6681 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:6682 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- DSA-5765-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5767-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3869-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3882-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2024:6682 Important: firefox security update Rocky Linux Security Advisories · Feb 4, 2026
- RLSA-2024:6681 Important: firefox security update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2024:3157-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14358-1 MozillaFirefox-130.0.1-1.1 on GA media 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
- openSUSE-SU-2024:14369-1 libmozjs-128-0-128.2.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3152-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2024-2038 Mozilla Firefox, Firefox ESR und Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 12, 2025
- ELSA-2024-6838 Important: firefox update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 24, 2024
- ELSA-2024-6681 Important: firefox security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Sep 20, 2024
- ELSA-2024-6682 Important: firefox security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 20, 2024