CVE-2026-58480 (GCVE-0-2026-58480)
Vulnerability from cvelistv5 – Published: 2026-07-08 13:05 – Updated: 2026-07-14 22:03 X_Open Source X_Known Exploited Vulnerability
VLAI
EPSS
VEX
Title
Blocksy Companion Pro < 2.1.47 Unauthenticated File Upload via save_attachments
Summary
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 exposed through the Advanced Reviews feature. Attackers can exploit the Custom Fonts extension's flawed strpos() substring check by uploading double-extension filenames such as shell.woff2.php, causing the validation to pass on the substring match while the web server executes the file as PHP, achieving remote code execution.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-08 13:42 UTC
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.wordfence.com/threat-intel/vulnerabil… | third-party-advisory |
| https://patchstack.com/database/wordpress/plugin/… | third-party-advisory |
| https://wordpress.org/plugins/blocksy-companion/ | productpatch |
| https://www.vulncheck.com/advisories/blocksy-comp… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Creative Themes | Blocksy Companion |
Affected:
0 , ≤ 2.1.46
(semver)
Unaffected: 2.1.47 (semver) cpe:2.3:a:creativethemes:blocksy_companion:*:*:*:*:*:wordpress:*:* |
Date Public
2026-07-01 00:00
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