Debian/thunderbird: medium 5.4
Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Action: Upgrade thunderbird to 1:153.5.1esr-1~deb13u1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1:153.5.1esr-1~deb13u1 | - |
Fixed versions
| 1:153.5.1esr-1~deb13u1 |
Sources
- osv: DEBIAN-CVE-2026-109721#Debian:13/thunderbird
- https://security-tracker.debian.org/tracker/CVE-2026-109721
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