PT-2026-102591 · Mozilla · Firefox+1

Mozilla

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CVE-2026-100817

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Published

2026-09-29

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Updated

2026-09-29

CVSS v3.1

5.4

Medium

VectorAV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Name of the Vulnerable Software and Affected Versions Thunderbird versions prior to 157 Firefox versions prior to 157
Description An issue exists within the JavaScript: WebAssembly component. WebAssembly is a binary instruction format for a stack-based virtual machine, designed as a portable compilation target for programming languages.
Recommendations Update Thunderbird to version 157. Update Firefox to version 157.

Fix

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dbugs@ptsecurity.com

Related Identifiers

CVE-2026-100817

Affected Products

Firefox
Thunderbird