CVE-2021-47812 - GravCMS 1.10.7 - Arbitrary YAML Write/Update (Unauthenticated) (2)

CVE-2021-47812 - GravCMS 1.10.7 - Arbitrary YAML Write/Update (Unauthenticated) (2)

https://cvefeed.io/rssfeed/latest.atom / Fri, 01/16/2026 - 04:57
CVE ID : CVE-2021-47812
Published : Jan. 16, 2026, 12:16 a.m. | 3 hours, 41 minutes ago
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.
Severity: 9.3 | CRITICAL
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Kenya Education Network CERT(KENET-CERT) is a Cybersecurity Emergency Response Team and Co-ordination Center operated by the National Research and Education Network of Kenya. KENET-CERT coordination center promotes awareness on cybersecurity incidences as well as coordinates and assists member institutions in responding effectively to cyber security threats and incidences. KENET-CERT works closely with Kenya's National CIRT coordination center (CIRT/CC) as a sector CIRT for the academic institutions. KENET promotes use of ICT in Teaching, Learning and Research in Higher Education Institutions in Kenya. KENET aims to interconnect all the Universities, Tertiary and Research Institutions in Kenya by setting up a cost effective and sustainable private network with high speed access to the global Internet. KENET also facilitates electronic communication among students and faculties in member institutions, share learning and teaching resources by collaboration in Research and Development of Educational content.