GHSA-9m4w-fmjw-fvjq

Suggest an improvement
Source
https://github.com/advisories/GHSA-9m4w-fmjw-fvjq
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-9m4w-fmjw-fvjq/GHSA-9m4w-fmjw-fvjq.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-9m4w-fmjw-fvjq
Aliases
Downstream
Published
2026-10-07T20:43:00Z
Modified
2026-10-07T21:00:04Z
Severity
  • 4.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Ghost: Regular Expression Denial of Service in External Media Inliner
Details

Impact

A crafted request to the external media inliner could cause excessive CPU usage, making the Ghost server unresponsive. Exploiting this requires Administrator access.

Vulnerable versions

This vulnerability is present in Ghost from v5.37.0 up to v6.65.0.

Patches

v6.67.0 contains a fix for this issue.

How to update

For self-hosters using Docker, find Docker's official Ghost image here. Updating a Docker-based Ghost instance is documented here.

If your Ghost is a Ghost-CLI install see our documentation on updating it to the latest version here.

References

Ghost thanks ka3n1x for disclosing this vulnerability responsibly.

For more information

If you have any questions or comments about this advisory, email us at security@ghost.org.

Database specific 
{
    "cwe_ids": [
        "CWE-1333"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-07T20:43:00Z",
    "nvd_published_at": "2026-10-05T19:17:19Z",
    "severity": "MODERATE"
}
References

Affected packages

npm / ghost

Package

Name
ghost
View open source insights on deps.dev
Purl
pkg:npm/ghost

Affected ranges

Type
SEMVER
Events
Introduced
5.37.0
Fixed
6.67.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-9m4w-fmjw-fvjq/GHSA-9m4w-fmjw-fvjq.json"