CVE-2021-47812

9.8 CRITICAL
Published: January 16, 2026 Modified: February 02, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://getgrav.org
Source: disclosure@vulncheck.com
Product
https://www.exploit-db.com/exploits/49973
Source: disclosure@vulncheck.com
Exploit
https://www.exploit-db.com/exploits/49973
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
0.2%
37th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

getgrav