PT-2026-102587 · Mozilla · Thunderbird+1

Mozilla

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CVE-2026-100813

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Published

2026-09-29

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Updated

2026-09-29

CVSS v3.1

8.8

High

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

Fix

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dbugs@ptsecurity.com

Weakness Enumeration

CWE-763

Related Identifiers

CVE-2026-100813

Affected Products

Firefox
Thunderbird