What is CVE-2026-39526?

CVE-2026-39526 is a medium-severity vulnerability in Wpstream, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-04-08.

How severe is CVE-2026-39526?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Wpstream

CVE-2026-39526

Authorization Bypass Through User-Controlled Key vulnerability in wpstream WpStream wpstream allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WpStream: from n/a through < 4.11.2.

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.000 (14.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.

Affected products

Wpstream — versions 0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

patchstack.com/database/Wordpress/Plugin/wpstream/vulnerability/wordpress-wpstr… (vdb-entry)

Frequently asked questions

What is CVE-2026-39526?: CVE-2026-39526 is a medium-severity vulnerability in Wpstream, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-04-08.
How severe is CVE-2026-39526?: Medium severity. CVSS v3 base score is 5.4 out of 10.