CVE-2026-3155 - OneSignal – Web Push Notifications <= 3.8.0 - Missing Authorization to Authenticated (Subscriber+) Post Meta Deletion via 'post_id'

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LOW

OneSignal – Web Push Notifications <= 3.8.0 - Missing Authorization to Authenticated (Subscriber+) Post Meta Deletion via 'post_id'

Published Apr 16, 2026

3.1

LOW

CVSS 3.1

EPSS 0.28%

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.

Affected products

Vendor Onesignal Product OneSignal – Web Push Notifications Default
unaffected
- Version
  0
  Status
  affected
  Constraints
  <=3.8.0

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Onesignal

OneSignal – Web Push Notifications

unaffected

Version	Status	Constraints
0	affected	<=3.8.0

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-862

Missing Authorization

References (3)

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-23219		Advisory
https://plugins.trac.wordpress.org/changeset/3501190/onesignal-free-web-push-notifications
https://www.wordfence.com/threat-intel/vulnerabilities/id/58337bbc-ba10-4876-b91c-78657afc67d1?source=cve