CVE-2022-26387

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

When installing an add-on, Firefox verified the signature before prompting the user; but while the user was confirming the prompt, the underlying add-on file could have been modified and Firefox would not have noticed. This vulnerability affects Firefox < 98, Firefox ESR < 91.7, and Thunderbird < 91.7.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-367

Affected software

No affected versions have been published.

Timeline

Published
Dec 22, 2022
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2022-26387: High severity, CVSS 7.5 | Vulnix