GetGrav Grav API Plugin up to 1.0.35 Session Validation SessionAuthenticator improper authorization

Summaryinfo

A vulnerability identified as critical has been detected in GetGrav Grav API Plugin up to 1.0.35. This affects the function SessionAuthenticator of the component Session Validation. Performing a manipulation results in improper authorization. This vulnerability is identified as CVE-2026-109320. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in GetGrav Grav API Plugin up to 1.0.35. It has been classified as critical. This affects the function SessionAuthenticator of the component Session Validation. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Grav API plugin (grav-plugin-api) before 1.0.36 contains an improper session validation vulnerability that allows disabled accounts to keep API access, because SessionAuthenticator does not enforce account state. Disabled users can reuse an already authorized browser or remember-me session to call API endpoints until expiry, defeating operator revocation.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-109320 since 10/12/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

Upgrading to version 1.0.36 eliminates this vulnerability.

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Productinfo

Type

• Automation Software

Vendor

• GetGrav

Name

• Grav API Plugin

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5
• 1.0.6
• 1.0.7
• 1.0.8
• 1.0.9
• 1.0.10
• 1.0.11
• 1.0.12
• 1.0.13
• 1.0.14
• 1.0.15
• 1.0.16
• 1.0.17
• 1.0.18
• 1.0.19
• 1.0.20
• 1.0.21
• 1.0.22
• 1.0.23
• 1.0.24
• 1.0.25
• 1.0.26
• 1.0.27
• 1.0.28
• 1.0.29
• 1.0.30
• 1.0.31
• 1.0.32
• 1.0.33
• 1.0.34
• 1.0.35

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