CVE-2026-2802
Received Received - Intake
Race Condition in Firefox JavaScript GC Component

Publication date: 2026-02-24

Last updated on: 2026-04-13

Assigner: Mozilla Corporation

Description
Race condition in the JavaScript: GC component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.
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Meta Information
Published
2026-02-24
Last Modified
2026-04-13
Generated
2026-06-16
AI Q&A
2026-02-24
EPSS Evaluated
2026-06-14
NVD
CVE-2026-2802
EUVD
EUVD-2026-8454
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
mozilla firefox to 148.0 (exc)
mozilla thunderbird to 148.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-362 The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
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Executive Summary

This vulnerability is a race condition in the JavaScript garbage collection (GC) component of Firefox versions earlier than 148.

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