Paper/Archive/CVE-2025-66301

CVE-2025-66301

getgrav grav — Grav ihas Broken Access Control which allows an Editor to modify the page's YAML Frontmatter to alter form processing actions

EPSS 1%public exploit CVSS 9.6

critical.is priorityof 100

CVSS 9.6 (NVD)9.6 / 10 × 3028.8 Not in CISA KEV+300.0 EPSS percentile 71.2.712 × 2014.2 Exploit: SSVC poc+1010.0 SSVC exploitation: poc+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

grav< 1.8.0-beta.27–CNA

Scores by source

NVD9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

GitHub_M (CNA)8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/getgrav/grav/security/advisories/GHSA-v8x2-fjv7-8hjh