CVE-2026-109312 Grav Login plugin - Authentication Bypass

Grav Login plugin > 2.7.0 < 3.9.9 contains an authentication bypass caused by incomplete verification of pending front-end 2FA sessions in processUserProfile(), letting attackers with victim's password disable 2FA and take over accounts, exploit requires ability to publish page form without access rule.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.35% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Published
12 October 2026
Updated
15 October 2026
Weakness
CWE-287

Vendor fix

Update to version 3.9.9 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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