Description
If an attacker was able to corrupt the methods of an Array object in JavaScript via prototype pollution, they could have achieved execution of attacker-controlled JavaScript code in a privileged context. This vulnerability affects Firefox ESR < 91.9.1, Firefox < 100.0.2, Firefox for Android < 100.3.0, and Thunderbird < 91.9.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox ESR | unspecified – < 91.9.1 | 91.9.1 |
| Mozilla | Firefox | unspecified – < 100.0.2 | 100.0.2 |
| Mozilla | Firefox for Android | unspecified – < 100.3.0 | 100.3.0 |
| Mozilla | Thunderbird | unspecified – < 91.9.1 | 91.9.1 |
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 | 91.9.1esr-1 | — |
| Debian 14 | thunderbird | 1:91.10.0-1 | — |
| Debian 13 | firefox-esr | 91.9.1esr-1 | — |
| Debian 13 | thunderbird | 1:91.10.0-1 | — |
| Debian 12 | firefox-esr | 91.9.1esr-1 | — |
| Debian 12 | thunderbird | 1:91.10.0-1 | — |
| Debian 11 | firefox-esr | 91.9.1esr-1~deb11u1 | DSA-5143-1 |
| Debian 11 | thunderbird | 1:91.10.0-1~deb11u1 | DSA-5158-1 |
| Debian 10 | firefox-esr | 91.9.1esr-1~deb10u1 | DSA-5143-1 |
| Debian 10 | thunderbird | 1:91.10.0-1~deb10u1 | DSA-5158-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 9 | firefox-esr | 91.9.1esr-1~deb9u1 | DLA-3021-1 |
| Debian 9 | thunderbird | 1:91.10.0-1~deb9u1 | DLA-3041-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | thunderbird | 1:91.9.1+build1-0ubuntu0.22.04.1 | USN-5435-1 |
| Ubuntu 20.04 LTS | firefox | 100.0.2+build1-0ubuntu0.20.04.1 | USN-5434-1 |
| Ubuntu 20.04 LTS | thunderbird | 1:91.9.1+build1-0ubuntu0.20.04.1 | USN-5435-1 |
| Ubuntu 18.04 LTS | firefox | 100.0.2+build1-0ubuntu0.18.04.1 | USN-5434-1 |
| Ubuntu 18.04 LTS | thunderbird | 1:91.9.1+build1-0ubuntu0.18.04.1 | USN-5435-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | firefox +1 | 91.9.1-1.el9_0 | RHSA-2022:4772, RHSA-2022:4765 |
| RHEL 8 | firefox +1 | 91.9.1-1.el8_6 | RHSA-2022:4776, RHSA-2022:4769 |
| RHEL 7 | firefox +1 | 91.9.1-1.el7_9 | RHSA-2022:4730, RHSA-2022:4729 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.4 EUS | firefox +1 | 91.9.1-1.el8_4 | RHSA-2022:4774, RHSA-2022:4766 |
| RHEL 8.2 EUS | firefox +1 | 91.9.1-1.el8_2 | RHSA-2022:4773, RHSA-2022:4768 |
| RHEL 8.1 E4S | firefox +1 | 91.9.1-1.el8_1 | RHSA-2022:4770, RHSA-2022:4767 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | firefox +1 | 91.9.1-1.el8_6.alma | ALSA-2022:4776, ALSA-2022:4769 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | firefox +1 | 91.9.1-1.el8_6 | RLSA-2022:4776, RLSA-2022:4769 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | MozillaFirefox | 91.9.1-150200.152.40.1 | SUSE-SU-2022:1830-1 |
| SLES 15 SP4 | MozillaThunderbird | 91.10.0-150200.8.73.1 | SUSE-SU-2022:2062-1 |
| SLES 15 SP3 | MozillaFirefox | 91.9.1-150200.152.40.1 | SUSE-SU-2022:1830-1 |
| SLES 15 SP3 | MozillaThunderbird | 91.10.0-150200.8.73.1 | SUSE-SU-2022:2062-1 |
| SLES 15 SP2 | MozillaFirefox | 91.9.1-150200.152.40.1 | SUSE-SU-2022:1830-1 |
| SLES 15 SP1 | MozillaFirefox | 91.9.1-150000.150.41.1 | SUSE-SU-2022:1818-1 |
| SLES 15 | MozillaFirefox | 91.9.1-150000.150.41.1 | SUSE-SU-2022:1818-1 |
Show 23 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | MozillaFirefox | 91.9.1-112.111.1 | SUSE-SU-2022:1808-1 |
| SLES 12 SP4 | MozillaFirefox | 91.9.1-112.111.1 | SUSE-SU-2022:1808-1 |
| SLES 12 SP3 | MozillaFirefox | 91.9.1-112.111.1 | SUSE-SU-2022:1808-1 |
| SLES 12 SP2 | MozillaFirefox | 91.9.1-112.111.1 | SUSE-SU-2022:1808-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 91.9.1-150200.152.40.1 | SUSE-SU-2022:1830-1 |
| SLES for SAP 15 SP1 | MozillaFirefox | 91.9.1-150000.150.41.1 | SUSE-SU-2022:1818-1 |
| SLES for SAP 15 | MozillaFirefox | 91.9.1-150000.150.41.1 | SUSE-SU-2022:1818-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 91.9.1-112.111.1 | SUSE-SU-2022:1808-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 91.9.1-112.111.1 | SUSE-SU-2022:1808-1 |
| SLES for SAP 12 SP3 | MozillaFirefox | 91.9.1-112.111.1 | SUSE-SU-2022:1808-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 91.9.1-150200.152.40.1 | SUSE-SU-2022:1830-1 |
| SLE HPC 15 SP1 | MozillaFirefox | 91.9.1-150000.150.41.1 | SUSE-SU-2022:1818-1 |
| SLE HPC 15 | MozillaFirefox | 91.9.1-150000.150.41.1 | SUSE-SU-2022:1818-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox | 91.9.1-112.111.1 | SUSE-SU-2022:1808-1 |
| SUSE OpenStack Cloud Crowbar 8 | MozillaFirefox | 91.9.1-112.111.1 | SUSE-SU-2022:1808-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox | 91.9.1-112.111.1 | SUSE-SU-2022:1808-1 |
| SUSE OpenStack Cloud 8 | MozillaFirefox | 91.9.1-112.111.1 | SUSE-SU-2022:1808-1 |
| SUSE Manager Server 4.1 | MozillaFirefox | 91.9.1-150200.152.40.1 | SUSE-SU-2022:1830-1 |
| SUSE Manager Retail Branch Server 4.1 | MozillaFirefox | 91.9.1-150200.152.40.1 | SUSE-SU-2022:1830-1 |
| SUSE Manager Proxy 4.1 | MozillaFirefox | 91.9.1-150200.152.40.1 | SUSE-SU-2022:1830-1 |
| SUSE HPE Helion OpenStack 8 | MozillaFirefox | 91.9.1-112.111.1 | SUSE-SU-2022:1808-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox | 91.9.1-150200.152.40.1 | SUSE-SU-2022:1830-1 |
| SUSE Enterprise Storage 6 | MozillaFirefox | 91.9.1-150000.150.41.1 | SUSE-SU-2022:1818-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 100.0.2-1.1 | openSUSE-SU-2024:12095-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 91.9.1-1.1 | openSUSE-SU-2024:12098-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.4 | MozillaFirefox | 91.9.1-150200.152.40.1 | SUSE-SU-2022:1830-1 |
| openSUSE Leap 15.4 | MozillaThunderbird | 91.10.0-150200.8.73.1 | SUSE-SU-2022:2062-1 |
| openSUSE Leap 15.3 | MozillaFirefox | 91.9.1-150200.152.40.1 | SUSE-SU-2022:1830-1 |
| openSUSE Leap 15.3 | MozillaThunderbird | 91.10.0-150200.8.73.1 | SUSE-SU-2022:2062-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | librewolf | 100.0.2-r0 | — |
| Alpine v3.23 | firefox +1 | 100.0.2-r0 | — |
| Alpine v3.23 | firefox-esr +1 | 91.9.1-r0 | — |
| Alpine v3.22 | firefox +1 | 100.0.2-r0 | — |
| Alpine v3.22 | firefox-esr +1 | 91.9.1-r0 | — |
| Alpine v3.21 | firefox +1 | 100.0.2-r0 | — |
| Alpine v3.21 | firefox-esr +1 | 91.9.1-r0 | — |
| Alpine v3.20 | firefox | 100.0.2-r0 | — |
| Alpine v3.20 | firefox-esr +1 | 91.9.1-r0 | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | firefox | 100.0.2-r0 | — |
| Alpine v3.19 | firefox-esr +1 | 91.9.1-r0 | — |
| Alpine v3.18 | firefox | 100.0.2-r0 | — |
| Alpine v3.18 | firefox-esr +1 | 91.9.1-r0 | — |
| Alpine v3.17 | firefox | 100.0.2-r0 | — |
| Alpine v3.17 | firefox-esr +1 | 91.9.1-r0 | — |
| Alpine v3.16 | firefox | 100.0.2-r0 | — |
| Alpine v3.16 | firefox-esr +1 | 91.9.1-r0 | — |
| Alpine v3.15 | firefox-esr | 91.9.1-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 91.9.1-1.amzn2.0.1 | ALAS2-2022-1804 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | firefox +1 | 91.9.1-1.0.1.el9_0 | ELSA-2022-4772, ELSA-2022-4765 |
| Oracle Linux 8 | firefox +1 | 91.9.1-1.0.1.el8_6 | ELSA-2022-4776, ELSA-2022-4769 |
| Oracle Linux 7 | firefox +1 | 91.9.1-1.0.1.el7_9 | ELSA-2022-4730, ELSA-2022-4729 |
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-2022-1802 ★ 152 · Aug 20, 2022
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 36
- ALSA-2022:4776 Critical: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2022:4769 Critical: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2022:4730 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2022:4729 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-5435-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-5434-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5158-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5143-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3021-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3041-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2022:4776 Critical: firefox security update Rocky Linux Security Advisories · Feb 4, 2026
- RLSA-2022:4769 Critical: thunderbird security update Rocky Linux Security Advisories · Feb 4, 2026
- openSUSE-SU-2024:12098-1 MozillaThunderbird-91.9.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:1830-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:1808-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2062-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12095-1 MozillaFirefox-100.0.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:1818-1 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-2022:4776 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:4774 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:4772 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:4773 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:4770 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:4769 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:4768 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:4766 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:4767 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2022:4765 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- ELSA-2022-4772 Critical: thunderbird security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jun 30, 2022
- ELSA-2022-4765 Critical: firefox security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jun 30, 2022
- ALAS2-2022-1804 Critical: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jun 7, 2022
- ELSA-2022-4769 Critical: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 30, 2022
- ELSA-2022-4776 Critical: firefox security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 30, 2022
- ELSA-2022-4729 Critical: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 25, 2022
- ELSA-2022-4730 Critical: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 24, 2022