Threat intelligence

Stream <= 4.2.0 - Missing Authorization to Authenticated (Subscriber+) Sensitive Information Disclosure via Heartbeat API

CVE-2026-11907 · stream

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Stream at a vulnerable version. How SiteRespond intelligence works

Vulnerability: Stream <= 4.2.0 - Missing Authorization to Authenticated (Subscriber+) Sensitive Information Disclosure via Heartbeat API
Affected software: stream(Plugin)
Affected versions: ≤ 4.2.0
Authentication: Authenticated (see advisory title)
Vulnerability type: Other
CVE: CVE-2026-11907
Published: 6 August 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: This advisory describes a other issue in the affected software. Review the source advisory and your installed version to assess exposure.
Source: Data imported from Wordfence Intelligence (advisory b7c7e45a-581e-4cf0-83ac-cbca816701f1). Methodology and redistribution notes

Check whether your installed version is affected

SiteRespond Defence matches your installed Stream version against this catalog when the Defence plugin is connected to your WordPress site.

Start SiteRespond Defence for WordPress — £29.99/monthScan your website

All Stream advisoriesBack to catalog