Vulnerability · Published Aug 7, 2026 · Assigned by Wordfence
CVE-2026-11907Stream <= 4.2.0 - Missing Authorization to Authenticated (Subscriber+) Sensitive Information Disclosure via Heartbeat API
Medium 6.5
In plain English
A medium-severity missing authorization in Stream – Activity Log & Audit Trail from xwp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).
Official description
The Stream plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.2.0. 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 access all Stream activity records via the Heartbeat API.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| xwp | Stream – Activity Log & Audit Trail | 0 – through 4.2.0 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N