CVE-2022-29909

HIGH

Firefox < 100.0 and Firefox ESR < 91.9 - Incorrect Default Permissions via Cross-Origin Browsing Context

Title source: llm
STIX 2.1

Description

Documents in deeply-nested cross-origin browsing contexts could have obtained permissions granted to the top-level origin, bypassing the existing prompt and wrongfully inheriting the top-level permissions. This vulnerability affects Thunderbird < 91.9, Firefox ESR < 91.9, and Firefox < 100.

References (4)

Core 4

Scores

CVSS v3 8.8
EPSS 0.0020
EPSS Percentile 41.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-276
Status published
Products (3)
mozilla/firefox < 100.0
mozilla/firefox_esr < 91.9
mozilla/thunderbird < 91.9
Published Dec 22, 2022
Tracked Since Feb 18, 2026