CVE-2023-23600: Notification permissions persisted between Normal and Private Browsing on Android

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-06-02 · updated 2026-06-17

Description

Per origin notification permissions were being stored in a way that didn't take into account what browsing context the permission was granted in. This lead to the possibility of notifications to be displayed during different browsing sessions. *This bug only affects Firefox for Android. Other operating systems are unaffected.* This vulnerability affects Firefox < 109.

Affected products

Mozilla Firefox: before 109.0 — fixed in 109.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 109.0. Check the vendor advisory for mitigations.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1787034
https://www.mozilla.org/security/advisories/mfsa2023-01/
https://bugzilla.mozilla.org/show_bug.cgi?id=1787034
https://www.mozilla.org/security/advisories/mfsa2023-01/

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