CVE-2026-42844
HIGH WAF: Medium
CVSS 8.8
Published: 2026-05-12
CWE-269 CWE-434
Grav is a file-based Web platform. In Grav 2.0.0-beta.2, a low-privileged authenticated API user with api.media.write can abuse /api/v1/blueprint-upload to write an arbitrary YAML file into user/accounts/, then log in as the newly created account with api.super privileges. This results in full administrative compromise of the Grav API. This vulnerability is fixed in API 1.0.0-beta.17.
WAF Coverage Analysis
Improper Privilege Management
Low WAF Coverage
OWASP: A01:2021 Broken Access Control
Unrestricted File Upload
Medium WAF Coverage
OWASP: A04:2021 Insecure Design
930xxx - Local File Inclusion
Affected Software
| Vendor | Product | Version |
|---|---|---|
| getgrav | grav | 2.0.0 |
References
- github.com (Exploit, Vendor Advisory)