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Vulnerabilities

Vulnerability · CVE-2025-66301

Grav is a file-based Web platform.

Published Dec 1, 2025 · catalog updated Dec 2, 2025 · Grav is a file-based

Last checked Nov 3, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-66301. EPSS is 1.43%. Act only if a listed version of Grav is a file-based is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Grav is a file-based).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High8.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.43%
Remediation
Version ranges on file
Affected products
vendor getgrav grav < 1.8.0-beta.27

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor getgrav grav < 1.8.0-beta.27< 1.8.0-beta.27

How to fix CVE-2025-66301

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-66301. EPSS is 1.43%. Act only if a listed version of Grav is a file-based is installed.

Which versions are affected?

Compare what you have installed with getgrav grav < 1.8.0-beta.27 < 1.8.0-beta.27. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 1.43%. There is no CISA KEV listing. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 1, 2025 · EUVD

    Detected

    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

  2. Dec 2, 2025 · EUVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2025-66301

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-66301

    30-day exploitation probability 1.43%

    first.org
  • EUVDVulnerability recordEUVD-2025-200109

    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

    euvd.enisa.europa.eu
  • Metasploit ModulesPublic exploit moduleexploit_multi/http/grav_twig_ssti_sandbox_bypass_rce

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com

References

Freshness

Last verified in this catalog Nov 1, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Metasploit ModulesNov 3, 2026
  • FIRST EPSSNov 1, 2026
  • CVE.orgOct 28, 2026
  • EUVDOct 27, 2026