CVE-2026-109738
Fixed in a distro release EPSS <1%CVSS 5.4
Use-after-free in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Products: Mozilla Firefox, Mozilla Thunderbird
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | firefox-esr-140 | 140.17.0-r2 |
| Debian 12 | firefox-esr | 153.5.0esr-1~deb12u1 |
| Debian 12 | thunderbird | no fix |
| Debian 13 | firefox-esr | 153.5.0esr-1~deb13u1 |
| Debian 13 | thunderbird | 1:153.5.1esr-1~deb13u1 |
| Debian 14 | firefox-esr | 153.5.0esr-1 |
| Debian 14 | thunderbird | 1:153.5.0esr-1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | MozillaFirefox | 153.5.0-150400.157.16.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | MozillaFirefox | 153.5.0-150400.157.16.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | MozillaFirefox | 153.5.0-150400.157.16.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | MozillaFirefox | 153.5.0-150400.157.16.1 |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP7 | MozillaFirefox | 153.5.0-150400.157.16.1 |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | MozillaThunderbird | 153.5.0-150400.13.9.1 |
| SUSE Linux Enterprise Server 12 SP5-LTSS | MozillaFirefox | 153.5.0-118.16.2 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | MozillaFirefox | 153.5.0-150400.157.16.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | MozillaFirefox | 153.5.0-150400.157.16.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | MozillaFirefox | 153.5.0-150400.157.16.1 |
| SUSE Linux Enterprise Server 16.0 | MozillaFirefox | 153.5.0-160000.1.1 |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | MozillaFirefox | 153.5.0-118.16.2 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | MozillaFirefox | 153.5.0-150400.157.16.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | MozillaFirefox | 153.5.0-150400.157.16.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | MozillaFirefox | 153.5.0-150400.157.16.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | MozillaFirefox | 153.5.0-160000.1.1 |
| SUSE Linux Enterprise Workstation Extension 15 SP7 | MozillaThunderbird | 153.5.0-150400.13.9.1 |
| 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 | 153.5.0-160000.1.1 |
| openSUSE Tumbleweed | MozillaFirefox | 158.0-1.1 |
| openSUSE Tumbleweed | MozillaThunderbird | 153.5.1-1.1 |
| openSUSE Tumbleweed | firefox-esr | 153.5.0-1.1 |