Userback <= 1.0.15 - Missing Authorization to Authenticated (Subscriber+) Plugin's Configuration Exposure
Affected versions: *-1.0.15
Vulnerability type: CWE-862 Missing Authorization
Affected software, patched versions and attribution
The Userback plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the userback_get_json function in all versions up to, and including, 1.0.15. This makes it possible for authenticated attackers, with Subscriber-level access and above, to extract plugin's configuration data including the Userback API access token and site's posts/pages contents, including those that have private and draft status.
Userback
Affected versions: *-1.0.15
Patched versions: 1.0.16
Researcher credit: jsonc
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- Published
- December 12, 2025
- CVSS
- 4.3