Authorization Bypass Vulnerability in Stream Plugin by WordPress
CVE-2026-11907

6.5MEDIUM

Key Information:

Vendor

WordPress
Status
Stream – Activity Log & Audit Trail
Vendor
CVE Published:
7 August 2026

What is CVE-2026-11907?

The Stream plugin for WordPress exhibits a significant vulnerability allowing unauthorized access due to insufficient user authorization checks. All versions up to and including 4.2.0 are affected. This issue can be exploited by authenticated users with subscriber-level access or higher, enabling them to retrieve all Stream activity records through the Heartbeat API. Proper measures should be taken to upgrade to the patched version to secure user data and prevent unauthorized access.

Affected Version(s)

Stream – Activity Log & Audit Trail 0 <= 4.2.0

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/stream/tags/4....

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Yat
.