Vulnerability · Published Jun 15, 2026 · Assigned by Patchstack
CVE-2026-39527WordPress WpStream plugin < 4.11.2 - Arbitrary File Upload vulnerability
Medium 5.4
In plain English
A medium-severity unrestricted file upload in WpStream from sc Internet Vivoo. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).
Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.3%top 78.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Subscriber Arbitrary File Upload in WpStream < 4.11.2 versions.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| sc Internet Vivoo | WpStream | n/a – before 4.11.2 |
Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L