TI-2026-71128 Aliases CVE-2026-109312 GHSA-m37v-wpv7-2x4p

Authentication bypass in Grav Login plugin skips 2FA checks

LOW 39CWE-287Published 2026-10-12 · Updated 2026-10-15

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

Grav Login plugin from 2.7.0 before 3.9.9 contains an authentication bypass in processUserProfile(), which checks that the session user exists but not that a pending front-end 2FA session is fully authorized. An attacker who knows a victim's password and can publish a page form without an access rule can call update_user before completing 2FA, disable twofa_enabled and take over the account. The flaw is classified as CWE-287.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Grav Login plugin 2.7.0 before 3.9.9 contains an authentication bypass in processUserProfile(), which checks that the session user exists but not that a pending front-end 2FA session is fully authorized. Attackers with a victim's password who can publish a page form without an access rule can invoke update_user before completing 2FA to disable twofa_enabled and take over the account.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00351 28th percentileScored 2026-11-07

Fix Fixed grav-plugin-login (getgrav): 3.9.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
getgrav	grav-plugin-login	2.7.0 to before 3.9.9	3.9.9	Patch available	CNA

grav-plugin-login Vendorgetgrav Affected 2.7.0 to before 3.9.9 Fixed in 3.9.9 Patch available CNA

Remediation

Update grav-plugin-login to version 3.9.9, which fixes the issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Fix · CNA grav-plugin-login (getgrav) Fixed in 3.9.9

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-10-12
getgrav grav-plugin-login 3.9.9
3 records Highest priority Priority LOW 3 LOW
Other records, highest priority first
- TI-2026-71129 Two-factor authentication bypass in Grav Login plugin via remember-me cookiePriority LOW 39
- TI-2026-71130 Password reset token disclosure in Grav Login plugin via reset pagePriority LOW 37
Show all 3 records →

Timeline

2026-10-12 Threatist record created from CVE-2026-109312
2026-10-12 Alias added: GHSA-m37v-wpv7-2x4p
2026-10-13 Priority changed: MEDIUM → LOW
2026-10-15 CISA SSVC decision points changed

References

Advisory 1

GitHub Security Advisory (GHSA-5rph-jqcf-2x36)

TI-2026-30893 Grav: Privilege Escalation via Missing Server-Side Validation of groups/access CVSS 3.1CRITICAL 9.4
TI-2025-28971 Cross Site Scripting vulnerability in grav v.1.7.48 and before allows an attacker to… CVSS 3.1CRITICAL 9.8
TI-2021-04523 Unauthenticated Arbitrary YAML Write/Update leads to Code Execution CVSS 3.1CRITICAL 9.8
TI-2026-50940 Grav CMS before 2.0.16 Origin Validation Bypass via Referer CVSS 4.0CRITICAL 9.3
TI-2026-46446 Grav before 2.0.7 Remote Code Execution via Blueprint dynamicData CVSS 4.0CRITICAL 9.3
TI-2021-22428 GravCMS 1.10.7 - Arbitrary YAML Write/Update (Unauthenticated) (2) CVSS 4.0CRITICAL 9.3

See all 228 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences