GHSA-qh7h-6c7g-x8m6: Duplicate Advisory Grav: Origin Validation Bypass Vulnerability

CRITICAL
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CVSS 5.4
CWE-346
Published
Advisory Summary

GHSA-qh7h-6c7g-x8m6 is a CRITICAL (CVSS 5.4) grav: origin validation bypass vulnerability (CWE-346: Origin Validation Error) affecting Duplicate Advisory libraries in the Packagist ecosystem. The issue involves grav: origin validation bypass in uri::referrer() and pages::referrerroute() via unanchored prefix match. Remediation is available in the latest vendor maintenance releases.

GHSA-qh7h-6c7g-x8m6 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-qh7h-6c7g-x8m6
Severity CRITICAL
CVSS v3.1 Base Score 5.4
CWE Classification CWE-346: Origin Validation Error
Affected Product Duplicate Advisory
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.4

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:R/S:U/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix GHSA-qh7h-6c7g-x8m6

To remediate this vulnerability, upgrade all affected Duplicate Advisory 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 GHSA-qh7h-6c7g-x8m6, inspect your project dependencies for Duplicate Advisory:

inspect dependencies for getgrav/grav

Analyze the terminal output to locate any version of Duplicate Advisory 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-346: Origin Validation Error, where the product does not properly verify that the source of data or communication is valid. In Duplicate Advisory, 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

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-9ccq-2jfg-qw33. This link is maintained to preserve external references. ### Original Description Grav CMS before 2.0.16 contains an origin validation bypass in the Uri::referrer() and Pages::referrerRoute() methods, which validate the Referer header using an unanchored string prefix match (str_starts_with($referrer, $base)) with no trailing delimiter. An attacker who controls a domain that begins with the victim site's origin (e.g. https://example.com.attacker.tld) can send a request with such a Referer to be treated as same-origin, bypassing the Referer-based origin check.

GHSA-qh7h-6c7g-x8m6 Affected Duplicate Advisory Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
getgrav/grav
 Packagist

References

GitHub Advisory / Wiki ADVISORY
https://github.com/getgrav/grav/security/advisories/GHSA-9ccq-2jfg-qw33
NVD — GHSA-qh7h-6c7g-x8m6 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-72702
www.vulncheck.com/advisories/grav-cms... WEB
https://www.vulncheck.com/advisories/grav-cms-before-origin-validation-bypass-via-referer

Frequently Asked Questions

What is GHSA-qh7h-6c7g-x8m6?
GHSA-qh7h-6c7g-x8m6 is a security vulnerability in Duplicate Advisory involving Grav: Origin validation bypass in Uri::referrer() and Pages::referrerRoute() via unanchored prefix match under CWE-346: Origin Validation Error.
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to current release patches across affected packages: getgrav/grav.
What version fixes GHSA-qh7h-6c7g-x8m6?
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 GHSA-qh7h-6c7g-x8m6?
GHSA-qh7h-6c7g-x8m6 has a CVSS v3.1 base score of 5.4 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.
What CWE is associated with GHSA-qh7h-6c7g-x8m6?
GHSA-qh7h-6c7g-x8m6 is classified under CWE-346: Origin Validation Error (The product does not properly verify that the source of data or communication is valid.).
How can I check Packagist dependencies for GHSA-qh7h-6c7g-x8m6?
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-qh7h-6c7g-x8m6",
  "modified" : "2026-09-17T20:24:25Z",
  "published" : "2026-08-25T03:32:09Z",
  "withdrawn" : "2026-09-17T20:24:25Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: Grav: Origin validation bypass in Uri::referrer() and Pages::referrerRoute() via unanchored prefix match",
  "details" : "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-9ccq-2jfg-qw33. This link is maintained to preserve external references.\n\n### Original Description\nGrav CMS before 2.0.16 contains an origin validation bypass in the Uri::referrer() and Pages::referrerRoute() methods, which validate the Referer header using an unanchored string prefix match (str_starts_with($referrer, $base)) with no trailing delimiter. An attacker who controls a domain that begins with the victim site's origin (e.g. https://example.com.attacker.tld) can send a request with such a Referer to be treated as same-origin, bypassing the Referer-based origin check.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "getgrav/grav"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "< 2.0.16"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/getgrav/grav/security/advisories/GHSA-9ccq-2jfg-qw33"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-72702"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/grav-cms-before-origin-validation-bypass-via-referer"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-346" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-17T20:24:25Z",
    "nvd_published_at" : "2026-08-25T02:16:46Z"
  }
}