CVE-2026-100795

MEDIUM 6.5CVE-2026-100795 · Published 29/09/2026 · updated 19/10/2026

In short

CVE-2026-100795 is a MEDIUM (CVSS 6.5) vulnerability affecting firefox (mozilla), thunderbird (mozilla).
Chance of exploitation in the next 30 days (EPSS): 0.26%, higher than 18.2% of all vulnerabilities.
Fix: update to 157.0.0, 157.0 or later.

Package	Affected versions	Patched versions
firefox mozilla	`< 157.0.0`	`157.0.0`
thunderbird mozilla	`< 157.0`	`157.0`

Denial-of-service in the Networking component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Package

Affected versions

Patched versions

< 157.0.0

157.0.0

< 157.0

157.0

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