CVE-2025-66844: Getgrav/grav Grav May Be Vulnerable To Vulnerability

Q: What is CVE-2025-66844?

CVE-2025-66844 is a security vulnerability in Getgrav/grav involving Grav may be vulnerable to SSRF attack via Twig Templates under CWE-918: Server-Side Request Forgery (SSRF).

Q: Which Getgrav/grav versions are affected?

Affected versions include releases prior to current release patches across affected packages: getgrav/grav.

Q: What version fixes CVE-2025-66844?

Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.

Q: Is getgrav/grav affected?

Yes, getgrav/grav is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.

Q: What is the CVSS score of CVE-2025-66844?

CVE-2025-66844 has a CVSS v3.1 base score of 9.1 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Q: What CWE is associated with CVE-2025-66844?

CVE-2025-66844 is classified under CWE-918: Server-Side Request Forgery (SSRF) (The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.).

Q: How can I check Packagist dependencies for CVE-2025-66844?

Run the dependency tree command: 'inspect dependencies for getgrav/grav'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

CRITICAL

Advisory Identifier: GHSA-729w-j79f-2c34

CVSS 9.1

CWE-918

Published 2025-12-15

Advisory Summary

CVE-2025-66844 is a CRITICAL (CVSS 9.1) grav may be vulnerable to vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting Getgrav/grav libraries in the Packagist ecosystem. The issue involves grav may be vulnerable to ssrf attack via twig templates. Remediation is available in the latest vendor maintenance releases.

CVE-2025-66844 at a Glance

CVE Identifier CVE-2025-66844

GHSA Identifier GHSA-729w-j79f-2c34

Severity CRITICAL

CVSS v3.1 Base Score 9.1

CWE Classification CWE-918: Server-Side Request Forgery (SSRF)

Affected Product Getgrav/grav

Package Ecosystem Packagist

Published Date 2025-12-15

Last Updated 2025-12-17

Security Impact

CVSS: 9.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).

Attack Vector Network (AV:N)

Attack Complexity Low (AC:L)

Privileges Required None (PR:N)

User Interaction None (UI:N)

Scope Unchanged (S:U)

Confidentiality High (C:H)

Integrity High (I:H)

Availability None (A:N)

How to Fix CVE-2025-66844

To remediate this vulnerability, upgrade all affected Getgrav/grav dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

getgrav/grav fixed: Latest secure release

Upgrade getgrav/grav to Latest secure release

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

inspect dependencies for getgrav/grav

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-66844, inspect your project dependencies for Getgrav/grav:

inspect dependencies for getgrav/grav

Analyze the terminal output to locate any version of Getgrav/grav in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-918: Server-Side Request Forgery (SSRF), where the web server receives a url or similar request from an upstream component and retrieves the contents of this url, but it does not sufficiently ensure that the request is being sent to the expected destination. In Getgrav/grav, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

In grav <1.7.49.5, a SSRF (Server-Side Request Forgery) vector may be triggered via Twig templates when page content is processed by Twig and the configuration allows undefined PHP functions to be registered.

CVE-2025-66844 Affected Getgrav/grav Versions

1 component(s)

Product / Package	Ecosystem	Affected Versions	Fixed Version
getgrav/grav	Packagist	≤ 1.7.49.5

References

NVD — CVE-2025-66844 NVD

https://nvd.nist.gov/vuln/detail/CVE-2025-66844

Getgrav/grav Source Repository REPOSITORY

https://github.com/Yohane-Mashiro/grav_cve/issues/2

Getgrav/grav Source Repository REPOSITORY

https://github.com/getgrav/grav

Frequently Asked Questions

What is CVE-2025-66844?

CVE-2025-66844 is a security vulnerability in Getgrav/grav involving Grav may be vulnerable to SSRF attack via Twig Templates under CWE-918: Server-Side Request Forgery (SSRF).

Which Getgrav/grav versions are affected?

Affected versions include releases prior to current release patches across affected packages: getgrav/grav.

What version fixes CVE-2025-66844?

Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.

Is getgrav/grav affected?

Yes, getgrav/grav is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.

What is the CVSS score of CVE-2025-66844?

CVE-2025-66844 has a CVSS v3.1 base score of 9.1 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

What CWE is associated with CVE-2025-66844?

CVE-2025-66844 is classified under CWE-918: Server-Side Request Forgery (SSRF) (The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.).

How can I check Packagist dependencies for CVE-2025-66844?

Run the dependency tree command: 'inspect dependencies for getgrav/grav'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

Machine-readable OSV JSON OSV v1.5 Schema

Normalized schema output

View Raw JSON

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-729w-j79f-2c34",
  "modified" : "2025-12-17T19:47:12Z",
  "published" : "2025-12-15T18:30:39Z",
  "aliases" : [ "CVE-2025-66844" ],
  "summary" : "Grav may be vulnerable to SSRF attack via Twig Templates",
  "details" : "In grav <1.7.49.5, a SSRF (Server-Side Request Forgery) vector may be triggered via Twig templates when page content is processed by Twig and the configuration allows undefined PHP functions to be registered.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "getgrav/grav"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.7.49.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-66844"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Yohane-Mashiro/grav_cve/issues/2"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/getgrav/grav"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-918" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-12-17T19:40:24Z",
    "nvd_published_at" : "2025-12-15T16:15:53Z"
  }
}

CVSS V3

9.1 CRITICAL