# CVE-2026-105651: Ghost: Stored XSS via Bookmark Card Images

> Attackers can inject malicious HTML via bookmark card images, potentially compromising admin sessions in Ghost CMS.

- **Severity:** High 7.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 5 Oct 2026
- **Updated:** 7 Oct 2026
- **Also known as:** MINI-87qj-x4fj-569r

## What is CVE-2026-105651?

CVE-2026-105651 is a high-severity cross-site scripting vulnerability in TryGhost Ghost, published on 5 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Ghost is a Node.js content management system. From 5.94.0 until 6.64.0, 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. This issue is fixed in version 6.64.0.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation), CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2026-105651?


## How do I fix CVE-2026-105651?

Upgrade to a fixed version.

## Is CVE-2026-105651 being exploited?

There is no known exploitation of CVE-2026-105651 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-105651 and fix it if it is affected.

What it is: CVE-2026-105651 is a high-severity cross-site scripting vulnerability in TryGhost Ghost, published on 5 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-105651 in the wild and no public exploit code.

Affected product: TryGhost Ghost. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-105651/ (Markdown: https://insights.sbomify.com/CVE-2026-105651/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-105651
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-105651
- OSV: https://osv.dev/vulnerability/CVE-2026-105651

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-105651/
Summaries are generated and may contain mistakes; the official description above is the record.