CVE-2026-105652: Ghost Password Hash Ordering Disclosure Vulnerability

LOW
Advisory Identifier: GHSA-53vv-xm9f-mm82
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CVSS 3.1
CWE-203 CWE-943
Published
Advisory Summary

CVE-2026-105652 is a LOW (CVSS 3.1) password hash ordering disclosure vulnerability (CWE-203: Observable Discrepancy) affecting Ghost libraries in the npm ecosystem. The issue involves password hash ordering disclosure in ghost admin api. Remediation is available by upgrading affected packages to version 6.64.0.

CVE-2026-105652 at a Glance

CVE Identifier CVE-2026-105652
GHSA Identifier GHSA-53vv-xm9f-mm82
Severity LOW
CVSS v3.1 Base Score 3.1
CWE Classification CWE-203: Observable Discrepancy
Affected Product Ghost
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 3.1

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

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

How to Fix CVE-2026-105652

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: 6.64.0 
npm install ghost@6.64.0
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-2026-105652, 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 6.64.0), 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-203: Observable Discrepancy, where the product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor. 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 Any staff-level user was able to determine the relative ordering of other staff users' hashed passwords. This does not directly disclose password hashes, and does not provide a practical path to recovering a password. ### Vulnerable versions This vulnerability is present in Ghost from v0.7.2 up to v6.64.0. ### Patches v6.64.0 contains a fix for this issue. ### How to update For self-hosters using Docker, find [Docker's official Ghost image here](https://hub.docker.com/_/ghost). Updating a Docker-based Ghost instance [is documented here](https://docs.ghost.org/install/docker#updating-ghost). If your Ghost is a Ghost-CLI install see our documentation on [updating it to the latest version here](https://docs.ghost.org/update). ### References Ghost thanks [carfeii](https://github.com/carfeii) and [Nhat Anh Vu](https://github.com/nhattanhh) for disclosing this vulnerability responsibly. ### For more information If you have any questions or comments about this advisory, email us at [security@ghost.org](mailto:security@ghost.org).

CVE-2026-105652 Affected Ghost Versions

1 component(s)
Fixed Versions:
6.64.0
Product / Package Ecosystem Affected Versions Fixed Version
ghost
npm/ghost
npm
≥ 0.7.2
< 6.64.0
6.64.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/TryGhost/Ghost/security/advisories/GHSA-53vv-xm9f-mm82
NVD — CVE-2026-105652 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-105652
Ghost Source Repository REPOSITORY
https://github.com/TryGhost/Ghost/pull/30760
Security Fix Commit FIX COMMIT
https://github.com/TryGhost/Ghost/commit/4fb587e4d49667f929b87f7d6a873ae5e9cc087f
Ghost Source Repository REPOSITORY
https://github.com/TryGhost/Ghost
Ghost Release RELEASE
https://github.com/TryGhost/Ghost/releases/tag/v6.64.0

Frequently Asked Questions

What is CVE-2026-105652?
CVE-2026-105652 is a security vulnerability in Ghost involving Password Hash Ordering Disclosure in Ghost Admin API under CWE-203: Observable Discrepancy.
Which Ghost versions are affected?
Affected versions include releases prior to 6.64.0 across affected packages: ghost.
What version fixes CVE-2026-105652?
Upgrading to 6.64.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ghost affected?
Yes, ghost is affected in releases prior to 6.64.0. Upgrade your dependency to 6.64.0 or later.
What is the CVSS score of CVE-2026-105652?
CVE-2026-105652 has a CVSS v3.1 base score of 3.1 (LOW) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2026-105652?
CVE-2026-105652 is classified under CWE-203: Observable Discrepancy (The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.).
How can I check npm dependencies for CVE-2026-105652?
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-53vv-xm9f-mm82",
  "modified" : "2026-10-07T20:27:22Z",
  "published" : "2026-10-07T20:27:22Z",
  "aliases" : [ "CVE-2026-105652" ],
  "summary" : "Ghost: Password Hash Ordering Disclosure in Ghost Admin API",
  "details" : "### Impact\n\nAny staff-level user was able to determine the relative ordering of other staff users' hashed passwords. This does not directly disclose password hashes, and does not provide a practical path to recovering a password.\n\n### Vulnerable versions\n\nThis vulnerability is present in Ghost from v0.7.2 up to v6.64.0.\n\n### Patches\n\nv6.64.0 contains a fix for this issue.\n\n### How to update\n\nFor self-hosters using Docker, find [Docker's official Ghost image here](https://hub.docker.com/_/ghost). Updating a Docker-based Ghost instance [is documented here](https://docs.ghost.org/install/docker#updating-ghost). \n\nIf your Ghost is a Ghost-CLI install see our documentation on [updating it to the latest version here](https://docs.ghost.org/update). \n\n### References\n\nGhost thanks [carfeii](https://github.com/carfeii) and [Nhat Anh Vu](https://github.com/nhattanhh) for disclosing this vulnerability responsibly.\n\n### For more information\n\nIf you have any questions or comments about this advisory, email us at [security@ghost.org](mailto:security@ghost.org).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "ghost"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.7.2"
      }, {
        "fixed" : "6.64.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/TryGhost/Ghost/security/advisories/GHSA-53vv-xm9f-mm82"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-105652"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TryGhost/Ghost/pull/30760"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TryGhost/Ghost/commit/4fb587e4d49667f929b87f7d6a873ae5e9cc087f"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/TryGhost/Ghost"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TryGhost/Ghost/releases/tag/v6.64.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-203", "CWE-943" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-10-07T20:27:22Z",
    "nvd_published_at" : "2026-10-05T20:17:14Z"
  }
}