CVE-2026-75827
Grav before 2.0.15 Arbitrary File Write via error_log
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-94 |
| Vendor | getgrav |
| Product | grav |
| Published | Aug 18, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
getgrav / grav
0 < 2.0.15
References
Credits
🔍 arpitjain099