W3 Total Cache <= 0.9.4.1 - Security Token Bypass via Type Juggling

Authentication Bypass by Primary Weakness
CVE Not available
CVSS Low (3.7)
Publicly Published September 26, 2016
Last Updated January 22, 2024
Researcher SecuPress
Description

The W3 Total Cache plugin for WordPress is vulnerable to authorization bypass due to the use of loose comparison on the nonce value in the /pub/apc.php file. This affects versions up to, and including, 0.9.4.1. This makes it possible for attackers to bypass nonce protections if a valid nonce starts with 0e. In the right situation this bypass can be used to empty the OPCache.

References

1 affected software package

Software Type Plugin
Software Slug w3-total-cache (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 0.9.4.1
Patched Version
  • 0.9.5
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