CVE-2026-109767: Information disclosure in the Networking component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

PriorityP419medium4.3CVSS 3.1

AVNACLPRNUIRSUCLINAN

EPSS

0.21%

10.4th percentile

Information disclosure in the Networking component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
mozilla	firefox	< Firefox 158	Firefox 158
mozilla	firefox_esr	< Firefox ESR 153.5	Firefox ESR 153.5
mozilla	thunderbird	< Thunderbird 153.5	Thunderbird 153.5
mozilla	thunderbird	< Thunderbird 158	Thunderbird 158

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