What is CVE-2026-58480?

CVE-2026-58480 is a critical-severity vulnerability in Creative Themes Blocksy Companion, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-07-08.

How severe is CVE-2026-58480?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Arbitrary file upload in Creative Themes Blocksy Companion

CVE-2026-58480

Blocksy Companion Pro plugin for WordPress before 2.1.47 contains an unauthenticated arbitrary file upload vulnerability that allows attackers to upload executable files by bypassing extension validation in the save_attachments function ex…

Vulnerability class: Unrestricted File Upload

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Creative Themes Blocksy Companion — versions 0, 2.1.47

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

disclosure@vulncheck.com (third-party-advisory)
disclosure@vulncheck.com (third-party-advisory)
disclosure@vulncheck.com (product, patch)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-58480?: CVE-2026-58480 is a critical-severity vulnerability in Creative Themes Blocksy Companion, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-07-08.
How severe is CVE-2026-58480?: Critical severity. CVSS v3 base score is 9.8 out of 10.