Essential Blocks for Gutenberg <= 4.2.0 - Missing Authorization via AJAX actions

Missing Authorization
CVE CVE-2023-47760
CVSS Medium (4.3)
Publicly Published November 13, 2023
Last Updated January 22, 2024
Researcher Abdi Pranata
Description

The Essential Blocks for Gutenberg plugin for WordPress is vulnerable to unauthorized access to AJAX actions due to a missing capability check on several functions in versions up to, and including, 4.2.0. This makes it possible for authenticated attackers, with subscriber-level access and above, to invoke those functions. A nonce check was performed in all of them. However, the nonce was leaked on the profile page. CVE-2023-51360 appears to be a duplicate of this issue.

References

1 affected software package

Software Type Plugin
Software Slug essential-blocks (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 4.2.0
Patched Version
  • 4.2.1
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