CVE-2021-47812 Details
Description
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.
An unauthenticated vulnerability in GravCMS version 1.10.7 allows remote attackers to write arbitrary YAML configuration and execute PHP code via the scheduler endpoint. Exploitation involves injecting base64-encoded payloads through the admin-nonce parameter to create malicious custom jobs that execute system commands.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jan 16, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.exploit-db.com/exploits/49973 | CISA-ADP | Exploit |
| https://getgrav.org | [email protected] | Product |
| https://www.exploit-db.com/exploits/49973 | [email protected] | Exploit |
| https://www.vulncheck.com/advisories/gravcms-arbitrary-yaml-writeupdate-unauthenticated | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-862 | Missing Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| getgrav grav | 1.10.7 |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Feb 2, 2026 | CVE Modified | [email protected] |
| Jan 30, 2026 | Initial Analysis | [email protected] |
| Jan 16, 2026 | CVE Modified | CISA-ADP |
| Jan 16, 2026 | New CVE Received | [email protected] |