What is CVE-2026-40783?

CVE-2026-40783 is a critical-severity vulnerability in Creative Themes Blocksy Companion Pro, classified under Code Injection. CVSS score: 9.9/10. Published 2026-06-17.

How severe is CVE-2026-40783?

Critical severity. CVSS v3 base score is 9.9 out of 10.

RCE in Creative Themes Blocksy Companion Pro

CVE-2026-40783

Contributor Remote Code Execution (RCE) in Blocksy Companion Pro <= 2.1.37 versions.

Vulnerability class: RCE (Remote Code Execution)

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Creative Themes Blocksy Companion Pro — versions n/a

Weakness classification (CWE)

CWE-94 — Code Injection

References

audit@patchstack.com (vdb-entry)

Frequently asked questions

What is CVE-2026-40783?: CVE-2026-40783 is a critical-severity vulnerability in Creative Themes Blocksy Companion Pro, classified under Code Injection. CVSS score: 9.9/10. Published 2026-06-17.
How severe is CVE-2026-40783?: Critical severity. CVSS v3 base score is 9.9 out of 10.