CVE-2021-47812Public exploitNetwork attack vectorHinoki check available

Unauthenticated command execution via scheduler configuration write

Published Jan 15, 2026 · Updated Jan 15, 2026

Missing authorization in the Grav Admin Plugin 1.10.7 allows remote attackers to write configuration and execute arbitrary commands. The administrator controller accepts a nonce obtained before login at /admin/config/scheduler and saves attacker-controlled custom jobs in scheduler.yaml. No Grav account or user interaction is required; execution occurs when the configured scheduler runs the injected PHP command.

CVSS severity9.3
Critical
EPSS probability2.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Missing authorization in the Grav Admin Plugin 1.10.7 allows remote attackers to write configuration and execute arbitrary commands. The administrator controller accepts a nonce obtained before login at /admin/config/scheduler and saves attacker-controlled custom jobs in scheduler.yaml. No Grav account or user interaction is required; execution occurs when the configured scheduler runs the injected PHP command.

The record

CVE
CVE-2021-47812
Published
Jan 15, 2026
Updated
Jan 15, 2026
Vendor
Grav
Product
Grav
Classifications
CWE-862, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.10.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Grav · Gravversion=1.10.7

Published CVSS scores

9.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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