CVE-2026-39527

WordPress WpStream plugin < 4.11.2 - Arbitrary File Upload vulnerability

Published Jun 15, 2026 CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed
Description
Subscriber Arbitrary File Upload in WpStream < 4.11.2 versions.

Remediation

Vendor Solution

Update the WordPress WpStream Plugin to the latest available version (at least 4.11.2).

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Sc Internet Vivoo
Sc Internet Vivoo wpstream
Wordpress
Wordpress wordpress
Vendors & Products Sc Internet Vivoo
Sc Internet Vivoo wpstream
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Subscriber Arbitrary File Upload in WpStream < 4.11.2 versions.
Title WordPress WpStream plugin < 4.11.2 - Arbitrary File Upload vulnerability
Weaknesses CWE-434
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Patchstack
Published
Updated
Jun 15, 2026, 10:20 PM
Reserved
Apr 7, 2026, 10:48 AM
Status
Deferred
Published
Jun 15, 2026, 9:16 PM
Modified
Oct 24, 2026, 1:10 PM