CVE-2026-75827
HIGH
NVD
CVSS Score
8.8
Severity
HIGH
Published
Aug 18, 2026
Vendor
unknown
Description
Grav before 2.0.15 contains an arbitrary file write vulnerability in the Blueprint dynamic-data bare-function validation that uses an incomplete denylist instead of a positive allowlist. Attackers with page-edit or blueprint-config access can invoke the error_log function through a data directive to append PHP payloads to web-accessible files, achieving remote code execution.