---
title: "CVE-2026-109312: Grav Login plugin - Authentication Bypass"
description: "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."
url: https://panop.io/threat-heartbeat/CVE-2026-109312/
---

# 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 ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-109312)

## 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](https://cwe.mitre.org/data/definitions/287.html)

## 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

- [https://nvd.nist.gov/vuln/detail/CVE-2026-109312](https://nvd.nist.gov/vuln/detail/CVE-2026-109312)
- [https://github.com/getgrav/grav/security/advisories/GHSA-5rph-jqcf-2x36](https://github.com/getgrav/grav/security/advisories/GHSA-5rph-jqcf-2x36)
- [https://www.vulncheck.com/advisories/grav-login-plugin-2.7.0-before-3.9.9-2fa-bypass-via-profile-update-form](https://www.vulncheck.com/advisories/grav-login-plugin-2.7.0-before-3.9.9-2fa-bypass-via-profile-update-form)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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