Ghost: Theme Upload Path Traversal — GHSA-CJC9-Q5GF-327P

Summary

### 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…

Timeline

Published by source

2026-08-04

Risk context

• Reported severity or threat level: medium.
• Review exposure for the affected product or family: npm: ghost.

Product

npm: ghost

What to do

General, cautious steps (verify details in the official source):

• Review exposure and plan remediation based on risk and environment.
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

Evidence and provenance

Canonical advisory ID

GHSA-CJC9-Q5GF-327P

Source

GitHub

Vendor

GitHub

Published by source

2026-08-04

Last source activity

2026-08-04

Additional identifiers

CVE-2026-70593

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.