CVE-2026-109706
Deferred Deferred - Pending Action

Use-after-free in Firefox IndexedDB

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Mozilla Corporation

Description
Use-after-free in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5.

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Meta Information

Published
2026-10-13
Last Modified
2026-10-13
Generated
2026-10-13
AI Q&A
2026-10-13
EPSS Evaluated
N/A
NVD
CVE-2026-109706
EUVD
EUVD-2026-98635

Affected Vendors & Products

Showing 6 associated CPEs
Vendor Product Version / Range
mozilla firefox to 158 (inc)
mozilla firefox_esr to 115.43 (inc)
mozilla firefox_esr to 153.5 (inc)
mozilla firefox 158
mozilla firefox_esr 115.43
mozilla firefox_esr 153.5

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Detection Guidance

Detection primarily involves checking Firefox ESR version. Run 'firefox --version' or check 'about:support' in Firefox to verify if your version is below ESR 115.43 or 153.5.

Mitigation Strategies

Update Firefox ESR to version 115.43 or later, or Firefox ESR 153.5 or later. Disable IndexedDB if not needed via Firefox configuration settings.

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