# CVE-2026-105679: Ghost: Stored XSS via File Uploads on Local Storage

> Attackers can upload malicious files to execute scripts in admin sessions via stored XSS in Ghost CMS local storage.

- **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:** 5 Oct 2026
- **Also known as:** MINI-gf34-v9rp-82rx

## What is CVE-2026-105679?

CVE-2026-105679 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 6.22.1 until 6.64.0, Ghost restricted the content type used to serve uploaded files to prevent browsers from executing them. On sites using the default local storage adapter, this restriction was not applied, so files uploaded by any staff user were served with a content type derived from their file extension. This could be used to host scripts 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-2026-105679?


## How do I fix CVE-2026-105679?

Upgrade to a fixed version.

## Is CVE-2026-105679 being exploited?

There is no known exploitation of CVE-2026-105679 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-105679 and fix it if it is affected.

What it is: CVE-2026-105679 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-2026-105679 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-2026-105679/ (Markdown: https://insights.sbomify.com/CVE-2026-105679/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-105679
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-105679
- OSV: https://osv.dev/vulnerability/CVE-2026-105679

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-105679/
Summaries are generated and may contain mistakes; the official description above is the record.