GHSA-9PHW-7H96-Q3RV

scheb/two-factor-bundle bypass two-factor authentication with remember-me option

In versions prior to 3.26.0 and prior to 4.11.0 of the "scheb/two-factor-bundle" project, a security vulnerability allowed attackers to bypass two-factor authentication (2FA) using the remember_me cookie. When the remember_me checkbox was used during login, a "REMEMBERME" cookie was created. Upon redirection to the 2FA page, attackers could manipulate the SESSIONID key, granting access to the homepage "/" and gaining authentication without completing 2FA.

The application does not adequately verify the identity of a user, device, or process before granting access. Typical impact: unauthorized access to functions or data reserved for authenticated parties.

GHSA-9PHW-7H96-Q3RV has a CVSS score of 7.4 (High). The vector is network-reachable, no 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 (4.11.0, 3.26.0); upgrading removes the vulnerable code path.

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1. What is GHSA-9PHW-7H96-Q3RV? GHSA-9PHW-7H96-Q3RV is a high-severity improper authentication vulnerability in scheb/two-factor-bundle (composer), affecting versions >= 4.0.0, < 4.11.0. It is fixed in 4.11.0, 3.26.0. The application does not adequately verify the identity of a user, device, or process before granting access.
2. How severe is GHSA-9PHW-7H96-Q3RV? GHSA-9PHW-7H96-Q3RV has a CVSS score of 7.4 (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.
3. Which versions of scheb/two-factor-bundle are affected by GHSA-9PHW-7H96-Q3RV? scheb/two-factor-bundle (composer) versions >= 4.0.0, < 4.11.0 is affected.
4. Is there a fix for GHSA-9PHW-7H96-Q3RV? Yes. GHSA-9PHW-7H96-Q3RV is fixed in 4.11.0, 3.26.0. Upgrade to this version or later.
5. Is GHSA-9PHW-7H96-Q3RV exploitable, and should I be worried? Whether GHSA-9PHW-7H96-Q3RV 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
6. What actually determines whether GHSA-9PHW-7H96-Q3RV 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.
7. How do I fix GHSA-9PHW-7H96-Q3RV?
   • Upgrade scheb/two-factor-bundle to 4.11.0 or later
   • Upgrade scheb/two-factor-bundle to 3.26.0 or later

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