CVE-2026-100765
Fixed in a distro release EPSS <1%CVSS 8.8
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
Products: Mozilla Firefox, Mozilla Thunderbird
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | firefox-esr | 153.4.0esr-1~deb12u1 |
| Debian 13 | firefox-esr | 153.4.0esr-1~deb13u1 |
| Debian 14 | firefox-esr | 153.4.0esr-1 |
| Debian 14 | thunderbird | 1:153.4.0esr-1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | MozillaFirefox | 153.4.0-150400.157.11.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | MozillaFirefox | 153.4.0-150400.157.11.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | MozillaFirefox | 153.4.0-150400.157.11.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | MozillaFirefox | 153.4.0-150400.157.11.1 |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP7 | MozillaFirefox | 153.4.0-150400.157.11.1 |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | MozillaThunderbird | 153.4.0-150400.13.6.1 |
| SUSE Linux Enterprise Server 12 SP5-LTSS | MozillaFirefox | 153.4.0-118.11.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | MozillaFirefox | 153.4.0-150400.157.11.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | MozillaFirefox | 153.4.0-150400.157.11.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | MozillaFirefox | 153.4.0-150400.157.11.1 |
| SUSE Linux Enterprise Server 16.0 | MozillaFirefox | 153.4.0-160000.1.1 |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | MozillaFirefox | 153.4.0-118.11.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | MozillaFirefox | 153.4.0-150400.157.11.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | MozillaFirefox | 153.4.0-150400.157.11.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | MozillaFirefox | 153.4.0-150400.157.11.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | MozillaFirefox | 153.4.0-160000.1.1 |
| SUSE Linux Enterprise Workstation Extension 15 SP7 | MozillaThunderbird | 153.4.0-150400.13.6.1 |
| Ubuntu 18.04 LTS | mozjs38 | no fix |
| Ubuntu 18.04 LTS | mozjs52 | no fix |
| Ubuntu 20.04 LTS | mozjs52 | no fix |
| Ubuntu 20.04 LTS | mozjs68 | no fix |
| Ubuntu 22.04 LTS | mozjs102 | no fix |
| Ubuntu 22.04 LTS | mozjs78 | no fix |
| Ubuntu 22.04 LTS | mozjs91 | no fix |
| Ubuntu 22.04 LTS | thunderbird | no fix |
| Ubuntu 24.04 LTS | mozjs102 | no fix |
| Ubuntu 24.04 LTS | mozjs115 | no fix |
| openSUSE Leap 16.0 | MozillaFirefox | 153.4.0-160000.1.1 |
| openSUSE Tumbleweed | MozillaFirefox | 157.0.1-1.1 |
| openSUSE Tumbleweed | MozillaThunderbird | 153.4.0-1.1 |
| openSUSE Tumbleweed | firefox-esr | 153.4.0-1.1 |