Trilby Media Grav CMS scheduler-webhook Plugin up to 1.1.3/2.0.8 webhook token validation Remote Code Execution

Summaryinfo

A vulnerability categorized as critical has been discovered in Trilby Media Grav CMS scheduler-webhook Plugin up to 1.1.3/2.0.8. The impacted element is an unknown function of the component webhook token validation. Executing a manipulation can lead to Remote Code Execution. The identification of this vulnerability is CVE-2026-57852. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in Trilby Media Grav CMS scheduler-webhook Plugin up to 1.1.3/2.0.8 and classified as critical. This vulnerability affects an unknown functionality of the component webhook token validation. The manipulation with an unknown input leads to a remote code execution vulnerability. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Grav CMS scheduler-webhook plugin contains an authentication bypass vulnerability that allows unauthenticated remote attackers to trigger configured scheduled jobs by exploiting a short-circuit logic flaw in the webhook token validation. Attackers can send a single unauthenticated POST request to the scheduler webhook endpoint to execute all configured scheduled jobs or target a specific job, causing unintended execution of operator-defined commands under the web server process user.

The advisory is available at github.com. This vulnerability was named CVE-2026-57852 since 06/25/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/21/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Content Management System

Vendor

• Trilby Media

Name

• Grav CMS scheduler-webhook Plugin

Version

• 1.1.0
• 1.1.1
• 1.1.2
• 1.1.3
• 2.0.0
• 2.0.1
• 2.0.2
• 2.0.3
• 2.0.4
• 2.0.5
• 2.0.6
• 2.0.7
• 2.0.8

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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