GHSA-p4ww-mcp9-j6f2 is a high-severity (CVSS 8.5) Path Traversal vulnerability in getgrav/grav. A fix is available for getgrav/grav — see the affected versions and patch details below.
Grav is vulnerable to Arbitrary File Read
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
Exploitation and automatability from CISA’s SSVC triage for GHSA-p4ww-mcp9-j6f2.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
GHSA-p4ww-mcp9-j6f2 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 379,842 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.
Real-World Exposure
getgrav/gravReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
Description
Summary
- A low privilege user account with page editing privilege can read any server files using "Frontmatter" form.
- This includes Grav user account files - /grav/user/accounts/*.yaml. This file stores hashed user password, 2FA secret, and the password reset token.
- This can allow an adversary to compromise any registered account by resetting a password for a user to get access to the password reset token from the file or by cracking the hashed password.
Details
The vulnerability can be found in /user/plugins/form/templates/forms/fields/display/display.html.twig
PoC
- This PoC was conducted on Grav CMS version 1.7.46 and Admin Plugin version 1.10.46
- go to “http://grav.local/admin/pages” then create new page with “Page Template” option set to “Form”.
- Then go to “Expert” and on Frontmatter input box used to following form template.
- Save page and go the preview or published page you will see the content of “/etc/passwd” file on the server.
Impact
This can allow a low privileged user to perform a full account takeover of other registered users including Administrators. This can also allow an adversary to read any file on the web server. And Due to insufficient permission verification , user who can write a page also can use frontmatter feature using this IDOR vulnerability PoC IDOR mention in CVE-2024-2792
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | getgrav/grav | all versions | 1.8.0-beta.27composer require getgrav/grav:^1.8.0-beta.27 |
Affected Products
gravgetgravDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for getgrav/grav, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update getgrav/grav to 1.8.0-beta.27 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-p4ww-mcp9-j6f2 is resolved across your whole dependency graph.
Workarounds
Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.
Frequently Asked Questions
Is GHSA-p4ww-mcp9-j6f2 in your dependencies?
Find it across Packagist, including transitive dependencies.