CVE-2026-39527 PUBLISHED

WordPress WpStream plugin < 4.11.2 - Arbitrary File Upload vulnerability

Assigner: Patchstack
Reserved: 07.04.2026 Published: 15.06.2026 Updated: 15.06.2026

Subscriber Arbitrary File Upload in WpStream < 4.11.2 versions.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CVSS Score: 5.4

Product Status

Vendor sc Internet Vivoo
Product WpStream
Versions Default: unaffected
  • affected from n/a to 4.11.2 (excl.)

Solutions

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

Credits

  • Muhammad Sharief | Patchstack Bug Bounty Program finder

References

Problem Types

  • CWE-434 Unrestricted Upload of File with Dangerous Type CWE

Impacts

  • CAPEC-17 Using Malicious Files