GHSA-347q-26qq-h2p6

Source

https://github.com/advisories/GHSA-347q-26qq-h2p6

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-347q-26qq-h2p6/GHSA-347q-26qq-h2p6.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-347q-26qq-h2p6

Aliases

Published

2026-10-07T20:27:41Z

Modified

2026-10-07T20:45:06Z

Severity

7.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N CVSS Calculator

Summary

Ghost: Stored XSS via Bookmark Card Images

Details

Impact

When creating a bookmark card, Ghost could store non-image files fetched from an external website as bookmark icons or thumbnails. This allowed any staff user, including Contributors, to host arbitrary HTML on the site's domain, possibly resulting in compromise of other staff users' admin sessions.

Vulnerable versions

This vulnerability is present in Ghost from v5.94.0 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. 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 Thai Son Dinh of VinSOC Labs and 白墨 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-434",
        "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-07T20:27:41Z",
    "nvd_published_at": "2026-10-05T20:17:14Z",
    "severity": "HIGH"
}

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

5.94.0

Fixed

6.64.0

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-347q-26qq-h2p6/GHSA-347q-26qq-h2p6.json"