Arbitrary file upload in Creativethemeshq Blocksy Companion
CVE-2026-15158
The Blocksy Companion plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.1.46 via the save_attachments function. This is due to the Custom Fonts extension registering a wp_check_filetype_and…
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
- Creativethemeshq Blocksy Companion — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-15158?
- CVE-2026-15158 is a critical-severity vulnerability in Creativethemeshq Blocksy Companion, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-07-09.
- How severe is CVE-2026-15158?
- Critical severity. CVSS v3 base score is 9.8 out of 10.