CVE-2021-47812

CRITICAL

9.8

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.

Details CVE

Score CVSS v3.19.8

SeveriteCRITICAL

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie1/16/2026

Derniere modification2/2/2026

Sourcenvd

Observations honeypot0

Produits affectes

getgrav:grav

Faiblesses (CWE)

CWE-862

References

https://getgrav.org(disclosure@vulncheck.com)

https://www.exploit-db.com/exploits/49973(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/gravcms-arbitrary-yaml-writeupdate-unauthenticated(disclosure@vulncheck.com)

https://www.exploit-db.com/exploits/49973(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlations IOC

Aucune correlation enregistree

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