CVE-2026-109313: Improper Authentication in getgrav grav-plugin-login
Description
The Grav Login plugin versions from 2.7.0 up to but not including 3.9.9 contain an authentication bypass vulnerability. This flaw allows attackers who have a valid password to bypass two-factor authentication by exploiting the remember-me cookie mechanism. Specifically, after passing the password step, an attacker can obtain a persistent remember-me cookie and restore it to gain a fully authorized session without completing the second authentication factor.
CVSS v4.0
Score 8.6high
Affected software
getgrav
grav-plugin-login
pkg:github/grav-plugin-loginRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-109313 describes an authentication bypass vulnerability in the Grav Login plugin (versions >=2.7.0 <3.9.9). The vulnerability arises because the plugin allows restoration of a remember-me cookie after the password authentication step, enabling attackers with valid passwords to skip the second factor of two-factor authentication. This results in a fully authorized session without completing the intended multi-factor authentication process.
Potential Impact
Attackers who have obtained a valid password can bypass the two-factor authentication mechanism, potentially gaining persistent, unauthorized access to user accounts. This undermines the security benefits of two-factor authentication and increases the risk of account compromise.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should monitor the vendor's official channels for updates and apply any released patches or updates that address this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-12T14:14:27.021Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6acd0c132cdf04f656b11bef
Added to database: 10/12/2026, 16:34:27 UTC
Last enriched: 10/12/2026, 17:04:47 UTC
Last updated: 10/12/2026, 21:46:47 UTC
Views: 9
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