PT-2026-102567 · Mozilla · Firefox+1

Amy Burnett

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CVE-2026-100793

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Published

2026-09-29

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Updated

2026-09-29

CVSS v3.1

6.5

Medium

VectorAV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Name of the Vulnerable Software and Affected Versions Thunderbird versions prior to 157 Firefox versions prior to 157
Description An issue exists in the JavaScript Engine component involving JIT (Just-In-Time) miscompilation. JIT is a method of improving program performance by compiling code during execution rather than before.
Recommendations Update Thunderbird to version 157. Update Firefox to version 157.

Fix

Type Confusion

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dbugs@ptsecurity.com

Weakness Enumeration

CWE-843

Related Identifiers

CVE-2026-100793

Affected Products

Firefox
Thunderbird