CVE-2021-47812: GravCMS 1.10.7 - Arbitrary YAML Write/Update (Unauthenticated) (2)
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2021-47812?
CVE-2021-47812 is considered a high severity vulnerability due to its ability to allow unauthenticated remote attackers to write arbitrary YAML files.
How do I fix CVE-2021-47812?
To fix CVE-2021-47812, update to the latest version of GravCMS that addresses this vulnerability.
What versions of GravCMS are affected by CVE-2021-47812?
CVE-2021-47812 affects GravCMS version 1.10.7.
What can an attacker do by exploiting CVE-2021-47812?
An attacker can exploit CVE-2021-47812 to write arbitrary YAML configuration and execute malicious PHP code.
Is authentication required to exploit CVE-2021-47812?
No, CVE-2021-47812 can be exploited by unauthenticated attackers.