CVE-2026-22595: Ghost Ghost Has Staff Token Permission Vulnerability

HIGH
Advisory Identifier: GHSA-9xg7-mwmp-xmjx
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CVSS 8.1
CWE-863
Published
Advisory Summary

CVE-2026-22595 is a HIGH (CVSS 8.1) ghost has staff token permission vulnerability (CWE-863: Incorrect Authorization) affecting Ghost libraries in the npm ecosystem. The issue involves ghost has staff token permission bypass. Remediation is available by upgrading affected packages to version 6.11.0, 5.130.6.

CVE-2026-22595 at a Glance

CVE Identifier CVE-2026-22595
GHSA Identifier GHSA-9xg7-mwmp-xmjx
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-863: Incorrect Authorization
Affected Product Ghost
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 8.1

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

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

How to Fix CVE-2026-22595

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

ghost fixed: 6.11.0 
npm install ghost@6.11.0
ghost fixed: 5.130.6 
npm install ghost@5.130.6
Verify Direct and Transitive Dependencies

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

npm ls ghost

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-22595, inspect your project dependencies using npm:

npm ls ghost

Analyze the terminal output to locate any version of Ghost in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.11.0), your application is affected.

Note: The npm ls ghost command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Ghost, 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

### Impact A vulnerability in Ghost's handling of Staff Token authentication allowed certain endpoints to be accessed that were only intended to be accessible via Staff Session authentication. External systems that have been authenticated via Staff Tokens for Admin/Owner-role users would have had access to these endpoints. ### Vulnerable versions This vulnerability is present in Ghost v5.121.0 to v5.130.5 to and Ghost v6.0.0 to v6.10.3. ### Patches v5.130.6 and v6.11.0 contain a fix for this issue. ### References Ghost thanks Sho Odagiri of GMO Cybersecurity by Ierae, Inc. for discovering and disclosing this vulnerability responsibly. ### For more information If there are any questions or comments about this advisory, email Ghost at [security@ghost.org](mailto:security@ghost.org).

CVE-2026-22595 Affected Ghost Versions

2 component(s)
Fixed Versions:
6.11.05.130.6
Product / Package Ecosystem Affected Versions Fixed Version
ghost
npm/ghost
npm
≥ 6.0.0
< 6.11.0
6.11.0
ghost
npm/ghost
npm
≥ 5.105.0
< 5.130.6
5.130.6

References

GitHub Advisory / Wiki ADVISORY
https://github.com/TryGhost/Ghost/security/advisories/GHSA-9xg7-mwmp-xmjx
NVD — CVE-2026-22595 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-22595
Security Fix Commit FIX COMMIT
https://github.com/TryGhost/Ghost/commit/9513d2a35c21067127ce8192443d8919ddcefcc8
Security Fix Commit FIX COMMIT
https://github.com/TryGhost/Ghost/commit/c3017f81a5387b253a7b8c1ba1959d430ee536a3
Ghost Source Repository REPOSITORY
https://github.com/TryGhost/Ghost

Frequently Asked Questions

What is CVE-2026-22595?
CVE-2026-22595 is a security vulnerability in Ghost involving Ghost has Staff Token permission bypass under CWE-863: Incorrect Authorization.
Which Ghost versions are affected?
Affected versions include releases prior to 6.11.0, 5.130.6 across affected packages: ghost.
What version fixes CVE-2026-22595?
Upgrading to 6.11.0, 5.130.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ghost affected?
Yes, ghost is affected in releases prior to 6.11.0, 5.130.6. Upgrade your dependency to 6.11.0, 5.130.6 or later.
What is the CVSS score of CVE-2026-22595?
CVE-2026-22595 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
What CWE is associated with CVE-2026-22595?
CVE-2026-22595 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check npm dependencies for CVE-2026-22595?
Run the dependency tree command: 'npm ls ghost'. 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-9xg7-mwmp-xmjx",
  "modified" : "2026-01-11T14:54:30Z",
  "published" : "2026-01-08T21:32:53Z",
  "aliases" : [ "CVE-2026-22595" ],
  "summary" : "Ghost has Staff Token permission bypass",
  "details" : "### Impact\nA vulnerability in Ghost's handling of Staff Token authentication allowed certain endpoints to be accessed that were only intended to be accessible via Staff Session authentication. External systems that have been authenticated via Staff Tokens for Admin/Owner-role users would have had access to these endpoints. \n\n### Vulnerable versions\nThis vulnerability is present in Ghost v5.121.0 to v5.130.5 to and Ghost v6.0.0 to v6.10.3.\n\n### Patches\nv5.130.6 and v6.11.0 contain a fix for this issue.\n\n### References\nGhost thanks Sho Odagiri of GMO Cybersecurity by Ierae, Inc. for discovering and disclosing this vulnerability responsibly.\n\n### For more information\nIf there are any questions or comments about this advisory, email Ghost at [security@ghost.org](mailto:security@ghost.org).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "ghost"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.0.0"
      }, {
        "fixed" : "6.11.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 6.10.3"
    }
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "ghost"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.105.0"
      }, {
        "fixed" : "5.130.6"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 5.130.5"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/TryGhost/Ghost/security/advisories/GHSA-9xg7-mwmp-xmjx"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-22595"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TryGhost/Ghost/commit/9513d2a35c21067127ce8192443d8919ddcefcc8"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TryGhost/Ghost/commit/c3017f81a5387b253a7b8c1ba1959d430ee536a3"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/TryGhost/Ghost"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-01-08T21:32:53Z",
    "nvd_published_at" : "2026-01-10T03:15:50Z"
  }
}