Description
Internal browser event interfaces were exposed to web content when privileged EventHandler listener callbacks ran for those events. Web content that tried to use those interfaces would not be able to use them with elevated privileges, but their presence would indicate certain browser features had been used, such as when a user opened the Dev Tools console. This vulnerability affects Firefox < 130, Firefox ESR < 128.2, Firefox ESR < 115.15, Thunderbird < 128.2, and Thunderbird < 115.15.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 130 | 130 |
| Mozilla | Firefox ESR | unspecified – < 128.2, unspecified – < 115.15 | 128.2 |
| Mozilla | Thunderbird | 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 14 | thunderbird | 1:128.2.0esr-1 | — |
| Debian 13 | firefox-esr | 115.15.0esr-1 | — |
| Debian 13 | thunderbird | 1:128.2.0esr-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 22.04 LTS | thunderbird | 1:115.15.0+build1-0ubuntu0.22.04.1 | USN-6995-1 |
| 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 20.04 LTS | thunderbird | 1:115.15.0+build1-0ubuntu0.20.04.1 | USN-6995-1 |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | firefox +2 | 128.2.0-1.el9_4 | RHSA-2024:6683, RHSA-2024:6681 |
| RHEL 8 | firefox +1 | 128.2.0-1.el8_10 | RHSA-2024:6684, RHSA-2024:6682 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.2 EUS | thunderbird | 128.2.0-1.el9_2 | RHSA-2024:6720 |
| RHEL 9.0 E4S | thunderbird | 128.2.0-1.el9_0 | RHSA-2024:6722 |
| RHEL 8.8 EUS | thunderbird | 128.2.0-1.el8_8 | RHSA-2024:6719 |
| RHEL 8.6 TUS | firefox +1 | 128.2.0-1.el8_6 | RHSA-2024:6892, RHSA-2024:6816 |
| 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 +1 | 128.2.0-1.el8_4 | RHSA-2024:6891, RHSA-2024:6721 |
| RHEL 8.4 E4S | firefox +1 | 128.2.0-1.el8_4 | RHSA-2024:6891, RHSA-2024:6721 |
| RHEL 8.4 AUS | firefox +1 | 128.2.0-1.el8_4 | RHSA-2024:6891, RHSA-2024:6721 |
| RHEL 8.2 AUS | thunderbird | 128.2.0-1.el8_2 | RHSA-2024:6723 |
| RHEL 7 ELS | firefox | 128.2.0-1.el7_9 | RHSA-2024:6838 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | firefox +2 | 128.2.0-1.el9_4.alma.1 | ALSA-2024:6683, ALSA-2024:6681 |
| AlmaLinux 8 | firefox +1 | 128.2.0-1.el8_10.alma.1 | ALSA-2024:6684, ALSA-2024:6682 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | firefox +1 | 128.2.0-1.el9_4.0.1 | RLSA-2024:6683, RLSA-2024:6681 |
| Rocky Linux 8 | firefox +1 | 128.2.0-1.el8_10 | RLSA-2024:6684, 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 SP6 | MozillaThunderbird | 128.2.3-150200.8.177.1 | SUSE-SU-2024:3507-1 |
| SLES 15 SP5 | MozillaFirefox | 128.2.0-150200.152.149.1 | SUSE-SU-2024:3157-1 |
| SLES 15 SP5 | MozillaThunderbird | 128.2.3-150200.8.177.1 | SUSE-SU-2024:3507-1 |
| 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 | MozillaThunderbird | 115.15.0-1.1 | openSUSE-SU-2024:14325-1 |
| 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 15.6 | MozillaThunderbird | 128.2.3-150200.8.177.1 | SUSE-SU-2024:3507-1 |
| openSUSE Leap 15.5 | MozillaFirefox | 128.2.0-150200.152.149.1 | SUSE-SU-2024:3157-1 |
| openSUSE Leap 15.5 | MozillaThunderbird | 128.2.3-150200.8.177.1 | SUSE-SU-2024:3507-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 115.15.0-1.amzn2.0.1 | ALAS2-2024-2638 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | firefox +2 | 128.2.0-1.0.2.el9_4 | ELSA-2024-6683, ELSA-2024-6681 |
| Oracle Linux 8 | firefox +1 | 128.2.0-1.0.2.el8_10 | ELSA-2024-6684, 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 41
- ALSA-2024:6684 Important: thunderbird security update AlmaLinux Security Advisories · Nov 6, 2026
- 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
- ALSA-2024:6683 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- USN-6992-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- USN-6995-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- RHSA-2024:6816 Red Hat Security Advisory: thunderbird security 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-2024:6891 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-2024:6720 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:6721 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:6722 Red Hat Security Advisory: thunderbird security 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-2024:6723 Red Hat Security Advisory: thunderbird 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
- RHSA-2024:6683 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:6719 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- RHSA-2024:6684 Red Hat Security Advisory: thunderbird 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-2024:6683 Important: thunderbird security update Rocky Linux Security Advisories · Feb 4, 2026
- RLSA-2024:6681 Important: firefox security update Rocky Linux Security Advisories · Feb 4, 2026
- RLSA-2024:6684 Important: thunderbird 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-2024:14325-1 MozillaThunderbird-115.15.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3507-1 Security update for MozillaThunderbird 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
- ALAS2-2024-2638 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Oct 2, 2024
- ELSA-2024-6684 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 20, 2024
- ELSA-2024-6681 Important: firefox security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Sep 20, 2024
- ELSA-2024-6683 Important: thunderbird 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
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1906744
- https://www.mozilla.org/security/advisories/mfsa2024-39/
- https://www.mozilla.org/security/advisories/mfsa2024-40/
- https://www.mozilla.org/security/advisories/mfsa2024-41/
- https://www.mozilla.org/security/advisories/mfsa2024-43/
- https://www.mozilla.org/security/advisories/mfsa2024-44/