Description
Removing an XSLT parameter during processing could have lead to an exploitable use-after-free. We have had reports of attacks in the wild abusing this flaw. This vulnerability affects Firefox < 97.0.2, Firefox ESR < 91.6.1, Firefox for Android < 97.3.0, Thunderbird < 91.6.2, and Focus < 97.3.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 97.0.2 | 97.0.2 |
| Mozilla | Firefox ESR | unspecified – < 91.6.1 | 91.6.1 |
| Mozilla | Firefox for Android | unspecified – < 97.3.0 | 97.3.0 |
| Mozilla | Thunderbird | unspecified – < 91.6.2 | 91.6.2 |
| Mozilla | Focus | unspecified – < 97.3.0 | 97.3.0 |
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 | 91.6.1esr-1 | — |
| Debian 14 | thunderbird | 1:91.6.2-1 | — |
| Debian 13 | firefox-esr | 91.6.1esr-1 | — |
| Debian 13 | thunderbird | 1:91.6.2-1 | — |
| Debian 12 | firefox-esr | 91.6.1esr-1 | — |
| Debian 12 | thunderbird | 1:91.6.2-1 | — |
| Debian 11 | firefox-esr | 91.6.1esr-1~deb11u1 | DSA-5090-1 |
| Debian 11 | thunderbird | 1:91.6.2-1~deb11u1 | DSA-5094-1 |
| Debian 10 | firefox-esr | 91.6.1esr-1~deb10u1 | DSA-5090-1 |
| Debian 10 | thunderbird | 1:91.6.2-1~deb10u1 | DSA-5094-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 9 | firefox-esr | 91.6.1esr-1~deb9u1 | DLA-2933-1 |
| Debian 9 | thunderbird | 1:91.6.2-1~deb9u1 | DLA-2939-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | firefox | 1:1snap1-0ubuntu1 | — |
| Ubuntu 20.04 LTS | firefox | 97.0.2+build1-0ubuntu0.20.04.1 | USN-5314-1 |
| Ubuntu 18.04 LTS | firefox | 97.0.2+build1-0ubuntu0.18.04.1 | USN-5314-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | firefox | 91.7.0-3.el8_5 | RHSA-2022:0818 |
| RHEL 8 | thunderbird | 91.7.0-2.el8_5 | RHSA-2022:0845 |
| RHEL 7 | firefox | 91.7.0-3.el7_9 | RHSA-2022:0824 |
| RHEL 7 | thunderbird | 91.7.0-2.el7_9 | RHSA-2022:0850 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.4 EUS | firefox | 91.7.0-3.el8_4 | RHSA-2022:0817 |
| RHEL 8.4 EUS | thunderbird | 91.7.0-2.el8_4 | RHSA-2022:0853 |
| RHEL 8.2 EUS | firefox | 91.7.0-3.el8_2 | RHSA-2022:0816 |
| RHEL 8.2 EUS | thunderbird | 91.7.0-2.el8_2 | RHSA-2022:0843 |
| RHEL 8.1 E4S | firefox | 91.7.0-3.el8_1 | RHSA-2022:0815 |
| RHEL 8.1 E4S | thunderbird | 91.7.0-2.el8_1 | RHSA-2022:0847 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | firefox | 91.7.0-3.el8_5.alma | ALSA-2022:0818 |
| AlmaLinux 8 | thunderbird | 91.7.0-2.el8_5.alma | ALSA-2022:0845 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | firefox | 91.7.0-3.el8_5 | RLSA-2022:0818 |
| Rocky Linux 8 | thunderbird | 91.7.0-2.el8_5 | RLSA-2022:0845 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | MozillaFirefox | 91.6.1-152.19.1 | SUSE-SU-2022:0783-1 |
| SLES 15 SP3 | MozillaThunderbird | 91.6.2-8.59.1 | SUSE-SU-2022:0804-1 |
| SLES 15 SP2 | MozillaFirefox | 91.6.1-152.19.1 | SUSE-SU-2022:0783-1 |
| SLES 15 SP1 | MozillaFirefox | 91.6.1-150.21.1 | SUSE-SU-2022:0778-1 |
| SLES 15 | MozillaFirefox | 91.6.1-150.21.1 | SUSE-SU-2022:0778-1 |
| SLES 12 SP5 | MozillaFirefox | 91.6.1-112.92.1 | SUSE-SU-2022:0777-1 |
Show 24 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | MozillaFirefox | 91.6.1-112.92.1 | SUSE-SU-2022:0777-1 |
| SLES 12 SP3 | MozillaFirefox | 91.6.1-112.92.1 | SUSE-SU-2022:0777-1 |
| SLES 12 SP2 | MozillaFirefox | 91.6.1-112.92.1 | SUSE-SU-2022:0777-1 |
| SLES 11 SP4 | MozillaFirefox | 91.7.0-78.167.1 | SUSE-SU-2022:14906-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 91.6.1-152.19.1 | SUSE-SU-2022:0783-1 |
| SLES for SAP 15 SP1 | MozillaFirefox | 91.6.1-150.21.1 | SUSE-SU-2022:0778-1 |
| SLES for SAP 15 | MozillaFirefox | 91.6.1-150.21.1 | SUSE-SU-2022:0778-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 91.6.1-112.92.1 | SUSE-SU-2022:0777-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 91.6.1-112.92.1 | SUSE-SU-2022:0777-1 |
| SLES for SAP 12 SP3 | MozillaFirefox | 91.6.1-112.92.1 | SUSE-SU-2022:0777-1 |
| SLE Real Time 15 SP2 | MozillaFirefox | 91.6.1-152.19.1 | SUSE-SU-2022:0783-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 91.6.1-152.19.1 | SUSE-SU-2022:0783-1 |
| SLE HPC 15 SP1 | MozillaFirefox | 91.6.1-150.21.1 | SUSE-SU-2022:0778-1 |
| SLE HPC 15 | MozillaFirefox | 91.6.1-150.21.1 | SUSE-SU-2022:0778-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox | 91.6.1-112.92.1 | SUSE-SU-2022:0777-1 |
| SUSE OpenStack Cloud Crowbar 8 | MozillaFirefox | 91.6.1-112.92.1 | SUSE-SU-2022:0777-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox | 91.6.1-112.92.1 | SUSE-SU-2022:0777-1 |
| SUSE OpenStack Cloud 8 | MozillaFirefox | 91.6.1-112.92.1 | SUSE-SU-2022:0777-1 |
| SUSE Manager Server 4.1 | MozillaFirefox | 91.6.1-152.19.1 | SUSE-SU-2022:0783-1 |
| SUSE Manager Retail Branch Server 4.1 | MozillaFirefox | 91.6.1-152.19.1 | SUSE-SU-2022:0783-1 |
| SUSE Manager Proxy 4.1 | MozillaFirefox | 91.6.1-152.19.1 | SUSE-SU-2022:0783-1 |
| SUSE HPE Helion OpenStack 8 | MozillaFirefox | 91.6.1-112.92.1 | SUSE-SU-2022:0777-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox | 91.6.1-152.19.1 | SUSE-SU-2022:0783-1 |
| SUSE Enterprise Storage 6 | MozillaFirefox | 91.6.1-150.21.1 | SUSE-SU-2022:0778-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaThunderbird | 91.7.0-1.1 | openSUSE-SU-2024:11909-1 |
| openSUSE Leap 15.3 | MozillaFirefox | 91.6.1-152.19.1 | openSUSE-SU-2022:0783-1 |
| openSUSE Leap 15.3 | MozillaThunderbird | 91.6.2-8.59.1 | openSUSE-SU-2022:0804-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | librewolf | 97.0.2-r0 | — |
| Alpine v3.23 | firefox +1 | 97.0.2-r0 | — |
| Alpine v3.23 | firefox-esr | 91.6.1-r0 | — |
| Alpine v3.23 | thunderbird | 91.6.2-r0 | — |
| Alpine v3.22 | firefox +1 | 97.0.2-r0 | — |
| Alpine v3.22 | firefox-esr | 91.6.1-r0 | — |
| Alpine v3.22 | thunderbird | 91.6.2-r0 | — |
| Alpine v3.21 | firefox +1 | 97.0.2-r0 | — |
| Alpine v3.21 | firefox-esr | 91.6.1-r0 | — |
| Alpine v3.21 | thunderbird | 91.6.2-r0 | — |
| Alpine v3.20 | firefox | 97.0.2-r0 | — |
| Alpine v3.20 | firefox-esr | 91.6.1-r0 | — |
| Alpine v3.20 | thunderbird | 91.6.2-r0 | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | firefox | 97.0.2-r0 | — |
| Alpine v3.19 | firefox-esr | 91.6.1-r0 | — |
| Alpine v3.19 | thunderbird | 91.6.2-r0 | — |
| Alpine v3.18 | firefox | 97.0.2-r0 | — |
| Alpine v3.18 | firefox-esr | 91.6.1-r0 | — |
| Alpine v3.18 | thunderbird | 91.6.2-r0 | — |
| Alpine v3.17 | firefox | 97.0.2-r0 | — |
| Alpine v3.17 | firefox-esr | 91.6.1-r0 | — |
| Alpine v3.17 | thunderbird | 91.6.2-r0 | — |
| Alpine v3.16 | firefox | 97.0.2-r0 | — |
| Alpine v3.16 | firefox-esr | 91.6.1-r0 | — |
| Alpine v3.16 | thunderbird | 91.6.2-r0 | — |
| Alpine v3.15 | firefox-esr | 91.6.1-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 91.7.0-2.amzn2.0.1 | ALAS2-2022-1779 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | firefox | 91.7.0-3.0.1.el8_5 | ELSA-2022-0818 |
| Oracle Linux 8 | thunderbird | 91.7.0-2.0.1.el8_5 | ELSA-2022-0845 |
| Oracle Linux 7 | firefox | 91.7.0-3.0.1.el7_9 | ELSA-2022-0824 |
| Oracle Linux 7 | thunderbird | 91.7.0-2.0.1.el7_9 | ELSA-2022-0850 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
mistymntncop/CVE-2022-26485 ★ 17 · Jan 31, 2023
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 36
- ALSA-2022:0845 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2022:0818 Critical: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2022:0853 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0847 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0850 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0845 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0843 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0824 Red Hat Security Advisory: firefox security and bug fix update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0818 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0816 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0817 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:0815 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- WID-SEC-2022-0432 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 11, 2026
- WID-SEC-2022-0302 Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode mit Administratorrechten BSI CERT-Bund (WID) · Oct 11, 2026
- USN-5314-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5094-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5090-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2939-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2933-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2022:0818 Critical: firefox security update Rocky Linux Security Advisories · Feb 4, 2026
- RLSA-2022:0845 Important: thunderbird security update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2022:0783-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:0783-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:14906-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0778-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0777-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:0804-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-1335 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 6, 2025
- openSUSE-SU-2024:11909-1 MozillaThunderbird-91.7.0-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- SUSE-SU-2022:0804-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2023-0838 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 3, 2023
- ALAS2-2022-1779 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Apr 27, 2022
- ELSA-2022-0845 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Mar 14, 2022
- ELSA-2022-0850 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 14, 2022
- ELSA-2022-0818 Critical: firefox security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Mar 10, 2022
- ELSA-2022-0824 Critical: firefox security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 10, 2022