CVE-2026-75827

HighCVSS 8.8/10Last modified Oct 22, 2026

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-94

Affected software

No affected versions have been published.

Timeline

Published: Aug 18, 2026
Last modified: Oct 22, 2026
NVD status: Deferred

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