Improper Authorization Affecting getgrav/grav package, versions <1.8.0-beta.27
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-PHP-GETGRAVGRAV-14157173
- published2 Dec 2025
- disclosed1 Dec 2025
- creditTarek Nakkouch
Introduced: 1 Dec 2025
NewCVE-2025-66301 (opens in a new tab)How to fix?
Upgrade getgrav/grav to version 1.8.0-beta.27 or higher.
Overview
getgrav/grav is a Modern, Crazy Fast, Ridiculously Easy and Amazingly Powerful Flat-File CMS.
Affected versions of this package are vulnerable to Improper Authorization via improper authorization checks in the process section of the YAML frontmatter during POST requests to /admin/pages/{page_name}. An attacker with editor privileges can alter form processing actions by modifying the data[_json][header][form] field, potentially enabling unauthorized actions or further exploitation.