Vulnerability · Published Aug 25, 2026 · Assigned by VulnCheck

CVE-2026-72699Grav Login Plugin before 3.9.1 Email Enumeration via Registration

Medium 5.3

In plain English

A medium-severity security flaw in grav-plugin-login from getgrav. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.3%top 82.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
getgrav	grav-plugin-login	0 – before 3.9.1

Weakness: CWE-203 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

GitHub Security Advisory (GHSA-crh8-xm27-j9g9) vendor-advisory
VulnCheck Advisory: Grav Login Plugin before 3.9.1 Email Enumeration via Registration third-party-advisory