Cross-context notifications via unscoped permission storage
Published Jun 2, 2023 · Updated Dec 18, 2025
Permission isolation failure in Mozilla Firefox for Android before 109 allows remote attackers to display notifications across browsing contexts. Fenix stored each origin's notification decision in Gecko storage without associating it with the Normal or Private Browsing context that granted it. An origin permitted in one context therefore retained permission in another session, exposing activity from contexts whose state should have been discarded.
Summary
What happened
Permission isolation failure in Mozilla Firefox for Android before 109 allows remote attackers to display notifications across browsing contexts. Fenix stored each origin's notification decision in Gecko storage without associating it with the Normal or Private Browsing context that granted it. An origin permitted in one context therefore retained permission in another session, exposing activity from contexts whose state should have been discarded.
The record
- CVE
- CVE-2023-23600
- Published
- Jun 2, 2023
- Updated
- Dec 18, 2025
- Vendor
- Mozilla
- Product
- Firefox
- Classifications
- Unavailable
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 2, 2023CVE publishedPublication date reported by the CVE source.
- Dec 18, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <109
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
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Public exploit references
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Technologies
Your stack
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Your stack
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