Description
Cross-Site Tracing occurs when a server will echo a request back via the Trace method, allowing an XSS attack to access to authorization headers and cookies inaccessible to JavaScript (such as cookies protected by HTTPOnly). To mitigate this attack, browsers placed limits on <code>fetch()</code> and XMLHttpRequest; however some webservers have implemented non-standard headers such as <code>X-Http-Method-Override</code> that override the HTTP method, and made this attack possible again. Thunderbird has applied the same mitigations to the use of this and similar headers. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox ESR | unspecified – < 102.5 | 102.5 |
| Mozilla | Thunderbird | unspecified – < 102.5 | 102.5 |
| Mozilla | Firefox | unspecified – < 107 | 107 |
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 | 102.5.0esr-1 | — |
| Debian 14 | thunderbird | 1:102.5.0-1 | — |
| Debian 13 | firefox-esr | 102.5.0esr-1 | — |
| Debian 13 | thunderbird | 1:102.5.0-1 | — |
| Debian 12 | firefox-esr | 102.5.0esr-1 | — |
| Debian 12 | thunderbird | 1:102.5.0-1 | — |
| Debian 11 | firefox-esr | 102.5.0esr-1~deb11u1 | DSA-5282-1 |
| Debian 11 | thunderbird | 1:102.5.0-1~deb11u1 | DSA-5284-1 |
| Debian 10 | firefox-esr | 102.5.0esr-1~deb10u1 | DLA-3199-1 |
| Debian 10 | thunderbird | 1:102.5.0-1~deb10u1 | DLA-3196-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | mozjs78 +1 | No fix yet | — |
| Ubuntu 22.04 LTS | thunderbird | 1:102.7.1+build2-0ubuntu0.22.04.1 | USN-5824-1 |
| Ubuntu 20.04 LTS | firefox | 107.0+build2-0ubuntu0.20.04.1 | USN-5726-1 |
| Ubuntu 20.04 LTS | mozjs52 +1 | No fix yet | — |
| Ubuntu 20.04 LTS | thunderbird | 1:102.7.1+build2-0ubuntu0.20.04.1 | USN-5824-1 |
| Ubuntu 18.04 LTS | firefox | 107.0+build2-0ubuntu0.18.04.1 | USN-5726-1 |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
| Ubuntu 18.04 LTS | thunderbird | 1:102.7.1+build2-0ubuntu0.18.04.1 | USN-5824-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | firefox | 102.5.0-1.el9_1 | RHSA-2022:8580 |
| RHEL 9 | thunderbird | 102.5.0-2.el9_1 | RHSA-2022:8561 |
| RHEL 8 | firefox | 102.5.0-1.el8_7 | RHSA-2022:8554 |
| RHEL 8 | thunderbird | 102.5.0-2.el8_7 | RHSA-2022:8547 |
| RHEL 7 | firefox | 102.5.0-1.el7_9 | RHSA-2022:8552 |
| RHEL 7 | thunderbird | 102.5.0-2.el7_9 | RHSA-2022:8555 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.0 EUS | firefox | 102.5.0-1.el9_0 | RHSA-2022:8979 |
| RHEL 9.0 EUS | thunderbird | 102.5.0-2.el9_0 | RHSA-2022:8980 |
| RHEL 8.6 EUS | firefox | 102.5.0-1.el8_6 | RHSA-2022:8548 |
| RHEL 8.6 EUS | thunderbird | 102.5.0-2.el8_6 | RHSA-2022:8545 |
| RHEL 8.4 EUS | firefox | 102.5.0-1.el8_4 | RHSA-2022:8549 |
| RHEL 8.4 EUS | thunderbird | 102.5.0-2.el8_4 | RHSA-2022:8544 |
| RHEL 8.2 TUS | firefox | 102.5.0-1.el8_2 | RHSA-2022:8550 |
| RHEL 8.2 TUS | thunderbird | 102.5.0-2.el8_2 | RHSA-2022:8543 |
| RHEL 8.2 E4S | firefox | 102.5.0-1.el8_2 | RHSA-2022:8550 |
| RHEL 8.2 E4S | thunderbird | 102.5.0-2.el8_2 | RHSA-2022:8543 |
| RHEL 8.2 AUS | firefox | 102.5.0-1.el8_2 | RHSA-2022:8550 |
| RHEL 8.2 AUS | thunderbird | 102.5.0-2.el8_2 | RHSA-2022:8543 |
| RHEL 8.1 E4S | firefox | 102.5.0-1.el8_1 | RHSA-2022:8553 |
| RHEL 8.1 E4S | thunderbird | 102.5.0-2.el8_1 | RHSA-2022:8556 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | firefox | 102.5.0-1.el9_1.alma | ALSA-2022:8580 |
| AlmaLinux 9 | thunderbird | 102.5.0-2.el9_1.alma | ALSA-2022:8561 |
| AlmaLinux 8 | firefox | 102.5.0-1.el8_7.alma | ALSA-2022:8554 |
| AlmaLinux 8 | thunderbird | 102.5.0-2.el8_7.alma | ALSA-2022:8547 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | firefox | 102.5.0-1.el8_7 | RLSA-2022:8554 |
| Rocky Linux 8 | thunderbird | 102.5.0-2.el8_7 | RLSA-2022:8547 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | MozillaFirefox | 102.5.0-150200.152.67.3 | SUSE-SU-2022:4058-1 |
| SLES 15 SP4 | MozillaThunderbird | 102.5.0-150200.8.90.1 | SUSE-SU-2022:4085-1 |
| SLES 15 SP3 | MozillaFirefox | 102.5.0-150200.152.67.3 | SUSE-SU-2022:4058-1 |
| SLES 15 SP3 | MozillaThunderbird | 102.5.0-150200.8.90.1 | SUSE-SU-2022:4085-1 |
| SLES 15 SP2 | MozillaFirefox | 102.5.0-150200.152.67.3 | SUSE-SU-2022:4058-1 |
| SLES 15 SP1 | MozillaFirefox | 102.5.0-150000.150.65.1 | SUSE-SU-2022:4083-1 |
| SLES 15 | MozillaFirefox | 102.5.0-150000.150.65.1 | SUSE-SU-2022:4083-1 |
Show 19 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | MozillaFirefox | 102.5.0-112.139.1 | SUSE-SU-2022:4247-1 |
| SLES 12 SP4 | MozillaFirefox | 102.5.0-112.139.1 | SUSE-SU-2022:4247-1 |
| SLES 12 SP3 | MozillaFirefox | 102.5.0-112.139.1 | SUSE-SU-2022:4247-1 |
| SLES 12 SP2 | MozillaFirefox | 102.5.0-112.139.1 | SUSE-SU-2022:4247-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 102.5.0-150200.152.67.3 | SUSE-SU-2022:4058-1 |
| SLES for SAP 15 SP1 | MozillaFirefox | 102.5.0-150000.150.65.1 | SUSE-SU-2022:4083-1 |
| SLES for SAP 15 | MozillaFirefox | 102.5.0-150000.150.65.1 | SUSE-SU-2022:4083-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 102.5.0-112.139.1 | SUSE-SU-2022:4247-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 102.5.0-112.139.1 | SUSE-SU-2022:4247-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 102.5.0-150200.152.67.3 | SUSE-SU-2022:4058-1 |
| SLE HPC 15 SP1 | MozillaFirefox | 102.5.0-150000.150.65.1 | SUSE-SU-2022:4083-1 |
| SLE HPC 15 | MozillaFirefox | 102.5.0-150000.150.65.1 | SUSE-SU-2022:4083-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox | 102.5.0-112.139.1 | SUSE-SU-2022:4247-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox | 102.5.0-112.139.1 | SUSE-SU-2022:4247-1 |
| SUSE Manager Server 4.1 | MozillaFirefox | 102.5.0-150200.152.67.3 | SUSE-SU-2022:4058-1 |
| SUSE Manager Retail Branch Server 4.1 | MozillaFirefox | 102.5.0-150200.152.67.3 | SUSE-SU-2022:4058-1 |
| SUSE Manager Proxy 4.1 | MozillaFirefox | 102.5.0-150200.152.67.3 | SUSE-SU-2022:4058-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox | 102.5.0-150200.152.67.3 | SUSE-SU-2022:4058-1 |
| SUSE Enterprise Storage 6 | MozillaFirefox | 102.5.0-150000.150.65.1 | SUSE-SU-2022:4083-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 107.0-1.1 | openSUSE-SU-2024:12518-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Tumbleweed | mozjs102 +1 | 102.5.0-1.1 | openSUSE-SU-2024:12532-1, openSUSE-SU-2024:12519-1 |
| openSUSE Leap 15.4 | MozillaFirefox | 102.5.0-150200.152.67.3 | SUSE-SU-2022:4058-1 |
| openSUSE Leap 15.4 | MozillaThunderbird | 102.5.0-150200.8.90.1 | SUSE-SU-2022:4085-1 |
| openSUSE Leap 15.3 | MozillaFirefox | 102.5.0-150200.152.67.3 | SUSE-SU-2022:4058-1 |
| openSUSE Leap 15.3 | MozillaThunderbird | 102.5.0-150200.8.90.1 | SUSE-SU-2022:4085-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | firefox-esr | 102.5.0-r0 | — |
| Alpine v3.22 | firefox-esr | 102.5.0-r0 | — |
| Alpine v3.21 | firefox-esr | 102.5.0-r0 | — |
| Alpine v3.20 | firefox-esr | 102.5.0-r0 | — |
| Alpine v3.19 | firefox-esr | 102.5.0-r0 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.18 | firefox-esr | 102.5.0-r0 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | firefox | 102.5.0-1.0.1.el9_1 | ELSA-2022-8580 |
| Oracle Linux 9 | thunderbird | 102.5.0-2.0.1.el9_1 | ELSA-2022-8561 |
| Oracle Linux 8 | firefox | 102.5.0-1.0.1.el8_7 | ELSA-2022-8554 |
| Oracle Linux 8 | thunderbird | 102.5.0-2.0.1.el8_7 | ELSA-2022-8547 |
| Oracle Linux 7 | firefox | 102.5.0-1.0.1.el7_9 | ELSA-2022-8552 |
| Oracle Linux 7 | thunderbird | 102.5.0-2.0.1.el7_9 | ELSA-2022-8555 |
Advisories 44
- RHSA-2022:8549 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- ALSA-2022:8580 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2022:8561 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2022:8547 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2022:8554 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2022:8553 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:8554 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:8550 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:8548 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:8555 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2022:8552 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-5824-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- USN-5726-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-5284-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5282-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3196-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3199-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2022:8554 Important: firefox security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2022:8547 Important: thunderbird security update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2022:4083-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12518-1 MozillaFirefox-107.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12532-1 libmozjs-102-0-102.5.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4085-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12519-1 MozillaThunderbird-102.5.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4058-1 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
- RHSA-2022:8979 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:8980 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:8580 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:8561 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:8556 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:8547 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:8544 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:8545 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:8543 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- WID-SEC-2022-2055 Mozilla Firefox und Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 29, 2025
- SUSE-SU-2022:4247-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2023-0561 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 18, 2023
- ELSA-2022-8561 Important: thunderbird security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Nov 24, 2022
- ELSA-2022-8580 Important: firefox security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Nov 24, 2022
- ELSA-2022-8554 Important: firefox security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 22, 2022
- ELSA-2022-8547 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 22, 2022
- ELSA-2022-8555 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 22, 2022
- ELSA-2022-8552 Important: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 22, 2022