CVE-2026-29784: Ghost Ghost Has Incomplete CSRF Protections Vulnerability

HIGH
Advisory Identifier: GHSA-9m84-wc28-w895
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CVSS 7.5
CWE-352
Published
Advisory Summary

CVE-2026-29784 is a HIGH (CVSS 7.5) ghost has incomplete csrf protections vulnerability (CWE-352: Cross-Site Request Forgery (CSRF)) affecting Ghost libraries in the npm ecosystem. The issue involves ghost has incomplete csrf protections around otc use. Remediation is available by upgrading affected packages to version 6.19.3.

CVE-2026-29784 at a Glance

CVE Identifier CVE-2026-29784
GHSA Identifier GHSA-9m84-wc28-w895
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-352: Cross-Site Request Forgery (CSRF)
Affected Product Ghost
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.5

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

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

How to Fix CVE-2026-29784

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: 6.19.3 
npm install ghost@6.19.3
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-2026-29784, 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 6.19.3), 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-352: Cross-Site Request Forgery (CSRF), where the web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from 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 Incomplete CSRF protections around `/session/verify` made it possible to use OTCs in login sessions different from the requesting session. In some scenarios this might have made it easier for phishers to take over a Ghost site. ### Vulnerable versions This vulnerability is present in Ghost from v5.101.6 up to v6.19.2. ### Patches v6.19.3 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 a project's Ghost is a Ghost-CLI install see the documentation on [updating it to the latest version here](https://docs.ghost.org/update). ### For more information If there are any questions or comments about this advisory, send an email to [security@ghost.org](mailto:security@ghost.org).

CVE-2026-29784 Affected Ghost Versions

1 component(s)
Fixed Versions:
6.19.3
Product / Package Ecosystem Affected Versions Fixed Version
ghost
npm/ghost
npm
≥ 5.101.6
< 6.19.3
6.19.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/TryGhost/Ghost/security/advisories/GHSA-9m84-wc28-w895
NVD — CVE-2026-29784 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-29784
Security Fix Commit FIX COMMIT
https://github.com/TryGhost/Ghost/commit/ec065a774fa125953d2aa644a59cd8990329e0a0
Ghost Source Repository REPOSITORY
https://github.com/TryGhost/Ghost

Frequently Asked Questions

What is CVE-2026-29784?
CVE-2026-29784 is a security vulnerability in Ghost involving Ghost has incomplete CSRF protections around OTC use under CWE-352: Cross-Site Request Forgery (CSRF).
Which Ghost versions are affected?
Affected versions include releases prior to 6.19.3 across affected packages: ghost.
What version fixes CVE-2026-29784?
Upgrading to 6.19.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ghost affected?
Yes, ghost is affected in releases prior to 6.19.3. Upgrade your dependency to 6.19.3 or later.
What is the CVSS score of CVE-2026-29784?
CVE-2026-29784 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-29784?
CVE-2026-29784 is classified under CWE-352: Cross-Site Request Forgery (CSRF) (The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.).
How can I check npm dependencies for CVE-2026-29784?
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-9m84-wc28-w895",
  "modified" : "2026-03-09T15:49:52Z",
  "published" : "2026-03-05T00:42:55Z",
  "aliases" : [ "CVE-2026-29784" ],
  "summary" : "Ghost has incomplete CSRF protections around OTC use",
  "details" : "### Impact\n\nIncomplete CSRF protections around `/session/verify` made it possible to use OTCs in login sessions different from the requesting session. In some scenarios this might have made it easier for phishers to take over a Ghost site. \n\n### Vulnerable versions\n\nThis vulnerability is present in Ghost from v5.101.6 up to v6.19.2.\n\n### Patches\n\nv6.19.3 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 a project's Ghost is a Ghost-CLI install see the documentation on [updating it to the latest version here](https://docs.ghost.org/update). \n\n### For more information\n\nIf there are any questions or comments about this advisory, send an email to [security@ghost.org](mailto:security@ghost.org).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "ghost"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.101.6"
      }, {
        "fixed" : "6.19.3"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 6.19.2"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/TryGhost/Ghost/security/advisories/GHSA-9m84-wc28-w895"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-29784"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TryGhost/Ghost/commit/ec065a774fa125953d2aa644a59cd8990329e0a0"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/TryGhost/Ghost"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-352" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-05T00:42:55Z",
    "nvd_published_at" : "2026-03-07T16:15:55Z"
  }
}