CVE-2026-92050
Fixed in a distro release EPSS <1%CVSS 9.1
Sandbox escape due to race condition in the XPConnect component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.
Products: Mozilla Firefox, Mozilla Thunderbird
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| 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 Tumbleweed | MozillaFirefox | 156.0-1.1 |