CVE-2025-66301
high-risk
Published 2025-12-01
Grav is a file-based Web platform. Prior to 1.8.0-beta.27, due to improper authorization checks when modifying critical fields on a POST request to /admin/pages/{page_name}, an editor with only permissions to change basic content on the form is now able to change the functioning of the form through modifying the content of the data[_json][header][form] which is the YAML frontmatter which includes the process section which dictates what happens after a user submits the form which include some important actions that could lead to further vulnerabilities. This vulnerability is fixed in 1.8.0-beta.27.
Do I need to act?
!
28.7% chance of exploitation in next 30 days
EPSS score — higher than 71% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.6/10
Critical
NETWORK
/ LOW complexity
Affected Products (20)
Affected Vendors
69
/ 100
high-risk
Severity
32/34 · Critical
Exploitability
15/34 · Moderate
Exposure
22/34 · High