CVE-2026-3155 Missing authorization in OneSignal – Web Push Notifications
Authenticated subscribers can delete arbitrary post metadata due to missing authorization checks in the OneSignal WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3155?
CVE-2026-3155 is a low-severity missing authorization vulnerability in OneSignal – Web Push Notifications, published on 16 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The OneSignal – Web Push Notifications plugin for WordPress is vulnerable to authorization bypass in versions up to, and including, 3.8.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete OneSignal metadata for arbitrary posts.
Weakness: CWE-862
Which versions are affected by CVE-2026-3155?
How do I fix CVE-2026-3155?
No fix has been published for CVE-2026-3155 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-3155 being exploited?
There is no known exploitation of CVE-2026-3155 in the wild and no public exploit code.
Sources
Also known as GHSA-qw58-mhg6-q49h.