Summary
Am I Affected?
Consumers are affected if their application meets the following preconditions:
- It is using the Auth0 WordPress Plugin, versions between 5.0.0-BETA0 and 5.5.0
- Auth0 WordPress plugin using the Auth0-PHP SDK versions between 8.0.0 to 8.18.0.
Resolution
Upgrade Auth0/wordpress to version 5.6.0 or greater.
Impact
In applications built with the Auth0 PHP SDK, cookies are encrypted with insufficient entropy, which may result in threat actors brute-forcing the encryption key and forging session cookies.
GHSA-VFPX-Q664-H93M has a CVSS score of 8.2 (High). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (5.6.0); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
Remediation advice
Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
Frequently Asked Questions
- What is GHSA-VFPX-Q664-H93M? GHSA-VFPX-Q664-H93M is a high-severity security vulnerability in auth0/wordpress (composer), affecting versions >= 5.0.0-BETA0, <= 5.5.0. It is fixed in 5.6.0.
- How severe is GHSA-VFPX-Q664-H93M? GHSA-VFPX-Q664-H93M has a CVSS score of 8.2 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of auth0/wordpress are affected by GHSA-VFPX-Q664-H93M? auth0/wordpress (composer) versions >= 5.0.0-BETA0, <= 5.5.0 is affected.
- Is there a fix for GHSA-VFPX-Q664-H93M? Yes. GHSA-VFPX-Q664-H93M is fixed in 5.6.0. Upgrade to this version or later.
- Is GHSA-VFPX-Q664-H93M exploitable, and should I be worried? Whether GHSA-VFPX-Q664-H93M is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether GHSA-VFPX-Q664-H93M is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix GHSA-VFPX-Q664-H93M? Upgrade
auth0/wordpressto 5.6.0 or later.