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Advisories

Grav before 2.0.15 Arbitrary File Write via error_log

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severity
high
date
Affecting

  • grav >= 0, < 2.0.15

CWE
  • CWE-94 Improper Control of Generation of Code ('Code Injection')
CVSS
9.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
arpitjain099
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.

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