GHSA-cjc9-q5gf-327p
Suggest an improvement- Source
- https://github.com/advisories/GHSA-cjc9-q5gf-327p
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-cjc9-q5gf-327p/GHSA-cjc9-q5gf-327p.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-cjc9-q5gf-327p
- Aliases
- Published
- 2026-08-04T21:49:56Z
- Modified
- 2026-08-17T08:10:30Z
- Severity
-
- 6.6 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:L CVSS Calculator
- Summary
- Ghost: Theme Upload Path Traversal
- Details
-
Impact
A vulnerability in custom themes allowed a staff user to write files outside of the uploads directory. This could be used to alter the behavior of the installation.
Vulnerable versions
This vulnerability is present in Ghost from v0.10.0 up to v6.54.0.
Patches
v6.54.1 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 Stephen Sims, Off By One Security for disclosing this vulnerability responsibly.
For more information
If you have any questions or comments about this advisory, email Ghost at security@ghost.org.
- Database specific
{ "cwe_ids": [ "CWE-22" ], "github_reviewed": true, "github_reviewed_at": "2026-08-04T21:49:56Z", "nvd_published_at": null, "severity": "MODERATE" }- References
Affected packages
npm / ghost
Package
- Name
- ghost
- View open source insights on deps.dev
- Purl
- pkg:npm/ghost