Grav Login Plugin up to 3.9.0 classes/Login.php register information disclosure

Summaryinfo

A vulnerability was found in Grav Login Plugin up to 3.9.0. It has been rated as problematic. Impacted is the function register of the file classes/Login.php. Performing a manipulation results in information disclosure. This vulnerability is known as CVE-2026-72699. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Grav Login Plugin up to 3.9.0. This affects the function register of the file classes/Login.php. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

The Grav Login plugin (getgrav/grav-plugin-login) before 3.9.1 is vulnerable to email address enumeration. The register() method in classes/Login.php throws a distinct exception (EMAIL_NOT_AVAILABLE) when a submitted email address already belongs to an existing account, while allowing registration to proceed otherwise. Because the registration endpoint has no rate limiting, an attacker can enumerate which email addresses have accounts on the site, one guess per request.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-72699 since 08/10/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

By approaching the search of inurl:classes/Login.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 3.9.1 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Grav

Name

• Login Plugin

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9.0

CPE 2.3info

• 🔒
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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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