| Name | CVE-2026-92035 |
| Description | Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Thunderbird 140.17, Firefox 156, Firefox ESR 153.3, Thunderbird 156, Thunderbird 153.3, Firefox ESR 115.42, and Firefox ESR 140.17. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4810-1, DSA-6536-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| firefox (PTS) | sid | 157.0-1 | fixed |
| thunderbird (PTS) | bookworm | 1:140.12.0esr-1~deb12u1 | vulnerable |
| bookworm (security) | 1:140.17.0esr-1~deb12u1 | fixed | |
| trixie | 1:140.12.0esr-1~deb13u1 | vulnerable | |
| trixie (security) | 1:140.17.0esr-1~deb13u1 | fixed | |
| forky | 1:140.14.0esr-1 | vulnerable | |
| sid | 1:153.4.0esr-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| firefox | source | (unstable) | 156.0-1 | |||
| thunderbird | source | bookworm | 1:140.17.0esr-1~deb12u1 | DLA-4810-1 | ||
| thunderbird | source | trixie | 1:140.17.0esr-1~deb13u1 | DSA-6536-1 | ||
| thunderbird | source | (unstable) | 1:153.3.0esr-1 |
https://www.mozilla.org/en-US/security/advisories/mfsa2026-90/#CVE-2026-92035
https://www.mozilla.org/en-US/security/advisories/mfsa2026-96/#CVE-2026-92035