Subscriber-level post metadata deletion via unchecked post_id
Published Apr 16, 2026 · Updated Apr 16, 2026
Missing authorization in OneSignal – Web Push Notifications 3.8.0 and earlier allows remote authenticated users to delete post metadata. The plugin's authenticated AJAX handler accepts an attacker-supplied post_id and deletes the associated OneSignal metadata without checking whether the caller may edit that post. Subscriber-level access is sufficient, and the effect is limited to OneSignal metadata for arbitrary WordPress posts.
Summary
What happened
Missing authorization in OneSignal – Web Push Notifications 3.8.0 and earlier allows remote authenticated users to delete post metadata. The plugin's authenticated AJAX handler accepts an attacker-supplied post_id and deletes the associated OneSignal metadata without checking whether the caller may edit that post. Subscriber-level access is sufficient, and the effect is limited to OneSignal metadata for arbitrary WordPress posts.
The record
- CVE
- CVE-2026-3155
- Published
- Apr 16, 2026
- Updated
- Apr 16, 2026
- Vendor
- OneSignal
- Product
- OneSignal – Web Push Notifications
- Classifications
- CWE-862, T1565.001
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 16, 2026CVE publishedPublication date reported by the CVE source.
- Apr 16, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <=3.8.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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