Grav CMS 1.10.7 Scheduler Endpoint admin-nonce authorization

Summaryinfo

A vulnerability was found in Grav CMS 1.10.7. It has been classified as critical. This vulnerability affects unknown code of the component Scheduler Endpoint. The manipulation of the argument admin-nonce leads to authorization. This vulnerability is referenced as CVE-2021-47812. Remote exploitation of the attack is possible. Furthermore, an exploit is available.

Detailsinfo

A vulnerability was found in Grav CMS 1.10.7 and classified as critical. This issue affects an unknown code block of the component Scheduler Endpoint. The manipulation of the argument admin-nonce with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

GravCMS 1.10.7 contains an unauthenticated vulnerability that allows remote attackers to write arbitrary YAML configuration and execute PHP code through the scheduler endpoint. Attackers can exploit the admin-nonce parameter to inject base64-encoded payloads and create malicious custom jobs with system command execution.

The weakness was published by legend as 49973. The advisory is shared at exploit-db.com. The identification of this vulnerability is CVE-2021-47812 since 01/14/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

The exploit is available at exploit-db.com. It is declared as proof-of-concept.

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

The vulnerability is also documented in the vulnerability database at Exploit-DB (49973). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Content Management System

Vendor

• Grav

Name

• CMS

Version

• 1.10.7

CPE 2.3info

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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