CVE-2025-66301

Description

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, due to improper authorization checks when modifying critical fields on a POST request to /admin/pages/{page_name}, an editor with only permissions to change basic content on the form is now able to change the functioning of the form through modifying the content of the data[_json][header][form] which is the YAML frontmatter which includes the process section which dictates what happens after a user submits the form which include some important actions that could lead to further vulnerabilities. This vulnerability is fixed in 1.8.0-beta.27.

CVSS v3.1 Score

9.6

CRITICAL

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

Weakness Type (CWE)

CWE-285 CWE-285

Affected Products

Vendor	Product	Versions
getgrav	grav	< 1.8.0
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All
getgrav	grav	All

References

Exploits

https://github.com/getgrav/grav/security/advisories/GHSA-v8x2-fjv7-8hjh https://github.com/getgrav/grav/security/advisories/GHSA-v8x2-fjv7-8hjh

Frequently Asked Questions

What is CVE-2025-66301? +

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, due to improper authorization checks when modifying critical fields on a POST request to /admin/pages/{page_name}, an editor with only permissions to change basic content on the form is now able to change the functioning of the form through modifying the content of the data[_json][header][form] which is the YAML frontmatter which includes the process section which dictates what happens after a user submits the form which include some important actions that could lead to further vulnerabilities. This vulnerability is fixed in 1.8.0-beta.27. It has a CVSS v3.1 base score of 9.6 (CRITICAL).

How severe is CVE-2025-66301? +

CVE-2025-66301 has a CVSS v3.1 score of 9.6 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-66301? +

CVE-2025-66301 affects products from getgrav, specifically: grav. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-66301? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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