Getgrav GravCMS vulnerabilities
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Published CVEs affecting Getgrav GravCMS: 1 record(s), with affected versions and fixes.
CVE-2021-47812
Critical · 9.8
CWE-862 Jan 15, 2026
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.