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CVE-2025-66301

Getgrav Grav broken access control

9.6 CRITICALPublic exploitEPSS 1.34%
  1. Published1 Dec 2025

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Affected products

Getgrav Grav< 1.8.0 · 1.8.0

Remediation

Fixed in
Getgrav Grav≥ 1.8.0

References

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Frequently asked

Is CVE-2025-66301 being actively exploited?

CVE-2025-66301 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.34%.

How severe is CVE-2025-66301?

CVE-2025-66301 has a CVSS 3.1 base score of 9.6, rated critical. EPSS estimates a 1.34% probability of exploitation.

Which products are affected by CVE-2025-66301?

Affected products include Getgrav Grav.

How do I fix CVE-2025-66301?

Upgrade affected software to a fixed version, for example Getgrav Grav 1.8.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-66301 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.