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TI-2021-15953 Aliases CVE-2021-38346GHSA-gq9p-f72g-3m6j

Brizy <= 2.3.11 Authenticated Unrestricted File Upload and Path Traversal

Priority MEDIUM 44CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Cross-site scripting, Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79 and CWE-434.

Summary

The Brizy Page Builder plugin <= 2.3.11 for WordPress allowed authenticated users to upload executable files to a location of their choice using the brizy_create_block_screenshot AJAX action. The file would be named using the id parameter, which could be prepended with "../" to perform directory traversal, and the file contents were populated via the ibsf parameter, which would be base64-decoded and written to the file. While the plugin added a .jpg extension to all uploaded filenames, a double extension attack was still possible, e.g. a file named shell.php would be saved as shell.php.jpg, and would be executable on a number of common configurations.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01737 77th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
themefusecomBrizy - Page Builder2.3.11 – 2.3.11—No fix listedCNA
  • Brizy - Page Builder Vendorthemefusecom Affected 2.3.11 – 2.3.11 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:brizy:brizy-page_builder:*:*:*:*:*:*:*:*up to 2.3.11Vulnerablethemefusecom
  • cpe:2.3:a:brizy:brizy-page_builder:*:*:*:*:*:*:*:* Versions up to 2.3.11 Vulnerable ·themefusecom

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-38346
  2. 2026-10-03 Alias added: GHSA-gq9p-f72g-3m6j

References

Advisory 1

  • TI-2021-15952 Brizy <= 1.0.125 and 1.0.127 – 2.3.11 Incorrect authorization checks allowing Post modification CVSS 3.1HIGH 7.1
  • TI-2021-15951 Brizy <= 2.3.11 Authenticated Stored Cross-Site Scripting CVSS 3.1MEDIUM 6.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences