CVE-2026-72699

Grav Login Plugin before 3.9.1 Email Enumeration via Registration

MEDIUM
5.3
CVSS Score
Published: August 25, 2026 at 01:30 AM UTC
Updated: October 12, 2026 at 03:10 PM UTC
2 products affected across 1 vendorGravGrav Plugin Login

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.3%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

95%
v < 3.9.1
Affected range stops below 3.9.1, so it looks safe — our inference, not a vendor statement
0 ≤ v < 3.9.10
Vendor states this is fixed in 3.9.1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-203

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