Description
A vulnerability where a JavaScript compartment mismatch can occur while working with the fetch API, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Thunderbird | unspecified – < 60.7 | 60.7 |
| Mozilla | Firefox | unspecified – < 67 | 67 |
| Mozilla | Firefox ESR | unspecified – < 60.7 | 60.7 |
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 | 60.7.0esr-1 | — |
| Debian 14 | thunderbird | 1:60.7.0-1 | — |
| Debian 13 | firefox-esr | 60.7.0esr-1 | — |
| Debian 13 | thunderbird | 1:60.7.0-1 | — |
| Debian 12 | firefox-esr | 60.7.0esr-1 | — |
| Debian 12 | thunderbird | 1:60.7.0-1 | — |
| Debian 9 | firefox-esr | 60.7.0esr-1~deb9u1 | DSA-4448-1 |
| Debian 9 | thunderbird | 1:60.7.0-1~deb9u1 | DSA-4451-1 |
| Debian 8 | firefox-esr | 60.7.0esr-1~deb8u1 | DLA-1800-1 |
| Debian 8 | thunderbird | 1:60.7.0-1~deb8u1 | DLA-1806-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | mozjs52 | No fix yet | — |
| Ubuntu 18.04 LTS | firefox | 67.0+build2-0ubuntu0.18.04.1 | USN-3991-1 |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
| Ubuntu 18.04 LTS | thunderbird | 1:60.7.0+build1-0ubuntu0.18.04.1 | USN-3997-1 |
| Ubuntu 16.04 LTS | firefox | 67.0+build2-0ubuntu0.16.04.1 | USN-3991-1 |
| Ubuntu 16.04 LTS | thunderbird | 1:60.7.0+build1-0ubuntu0.16.04.1 | USN-3997-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | firefox +1 | 60.7.0-1.el8_0 | RHSA-2019:1308, RHSA-2019:1269 |
| RHEL 7 | firefox +1 | 60.7.0-1.el7_6 | RHSA-2019:1309, RHSA-2019:1265 |
| RHEL 6 | firefox +1 | 60.7.0-1.el6_10 | RHSA-2019:1310, RHSA-2019:1267 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | MozillaFirefox | 60.7.0-3.40.6 | SUSE-SU-2019:1405-1 |
| SLES 15 SP1 | MozillaThunderbird | 60.7.0-3.33.2 | SUSE-SU-2019:1458-1 |
| SLES 15 | MozillaFirefox | 60.7.0-3.40.6 | SUSE-SU-2019:1405-1 |
| SLES 15 | MozillaThunderbird | 60.7.0-3.33.2 | SUSE-SU-2019:1458-1 |
| SLES 12 SP4 | MozillaFirefox | 60.7.0-109.72.1 | SUSE-SU-2019:1388-1 |
| SLES 12 SP3 | MozillaFirefox | 60.7.0-109.72.1 | SUSE-SU-2019:1388-1 |
| SLES 12 SP2 | MozillaFirefox | 60.7.0-109.72.1 | SUSE-SU-2019:1388-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | MozillaFirefox | 60.7.0-109.72.1 | SUSE-SU-2019:1388-1 |
| SLES 12 | MozillaFirefox | 60.7.0-109.72.1 | SUSE-SU-2019:1388-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 60.7.0-109.72.1 | SUSE-SU-2019:1388-1 |
| SLES for SAP 12 SP3 | MozillaFirefox | 60.7.0-109.72.1 | SUSE-SU-2019:1388-1 |
| SLES for SAP 12 SP2 | MozillaFirefox | 60.7.0-109.72.1 | SUSE-SU-2019:1388-1 |
| SLES for SAP 12 SP1 | MozillaFirefox | 60.7.0-109.72.1 | SUSE-SU-2019:1388-1 |
| SUSE Package Hub 12 | MozillaThunderbird | 60.7.2-85.1 | openSUSE-SU-2019:1664-1 |
| SUSE OpenStack Cloud 7 | MozillaFirefox | 60.7.0-109.72.1 | SUSE-SU-2019:1388-1 |
| SUSE Enterprise Storage 4 | MozillaFirefox | 60.7.0-109.72.1 | SUSE-SU-2019:1388-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 92.0-1.2 | openSUSE-SU-2024:10600-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 91.1.1-1.1 | openSUSE-SU-2024:10601-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.0 | MozillaFirefox | 60.7.0-lp150.3.54.5 | openSUSE-SU-2019:1534-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | firefox-esr | 60.7.0-r0 | — |
| Alpine v3.22 | firefox-esr | 60.7.0-r0 | — |
| Alpine v3.21 | firefox-esr | 60.7.0-r0 | — |
| Alpine v3.20 | firefox-esr | 60.7.0-r0 | — |
| Alpine v3.19 | firefox-esr | 60.7.0-r0 | — |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.18 | firefox-esr | 60.7.0-r0 | — |
| Alpine v3.17 | firefox-esr | 60.7.0-r0 | — |
| Alpine v3.16 | firefox-esr | 60.7.0-r0 | — |
| Alpine v3.15 | firefox-esr | 60.7.0-r0 | — |
| Alpine v3.14 | firefox-esr | 60.7.0-r0 | — |
| Alpine v3.13 | firefox-esr | 60.7.0-r0 | — |
| Alpine v3.12 | firefox-esr | 60.7.0-r0 | — |
| Alpine v3.11 | firefox-esr | 60.7.0-r0 | — |
| Alpine v3.10 | firefox-esr | 60.7.0-r0 | — |
| Alpine v3.9 | firefox-esr | 60.7.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 60.7.0-1.amzn2.0.1 | ALAS2-2019-1229 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | firefox | 60.7.0-1.0.2.el8_0 | ELSA-2019-1269 |
| Oracle Linux 8 | thunderbird | 60.7.0-1.0.1.el8_0 | ELSA-2019-1308 |
| Oracle Linux 7 | firefox +1 | 60.7.0-1.0.1.el7_6 | ELSA-2019-1309, ELSA-2019-1265 |
Advisories 25
- RHSA-2019:1310 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2019:1308 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2019:1309 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2019:1269 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2019:1267 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2019:1265 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3997-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · May 29, 2026
- USN-3991-1 firefox vulnerabilities Ubuntu Security Notices (USN) · May 29, 2026
- DSA-4451-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4448-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1800-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1806-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2019:1458-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1534-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10600-1 MozillaFirefox-92.0-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1664-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1388-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1405-1 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
- openSUSE-SU-2024:10601-1 MozillaThunderbird-91.1.1-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- ELSA-2019-1308 Important: thunderbird security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jul 30, 2019
- ELSA-2019-1269 Critical: firefox security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jul 30, 2019
- ALAS2-2019-1229 Critical: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jun 13, 2019
- ELSA-2019-1309 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 3, 2019
- ELSA-2019-1265 Critical: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 24, 2019