CVE-2021-47812
GravCMS 1.10.7 - Arbitrary YAML Write/Update (Unauthenticated) (2)
9.8CVSSCRITICAL
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.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:HIntegrityHigh
A:HAvailabilityHigh
Weaknesses
Affected Products
Attack Graph
Products CVE Techniques Tactics
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Exploitability
1 exploit source identified
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View exploit detailsMITRE ATT&CK
2 techniques Initial Access
References
Timeline
Published
Jan 15, 2026
Last Updated
Feb 2, 2026
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