GHSA-fwh9-qg68-vxp4: Medium severity npm/ghost vulnerability
Impact
A crafted content import file could cause excessive CPU usage, making the Ghost server unresponsive. Exploiting this requires Administrator access.
Vulnerable versions
This vulnerability is present in Ghost from v4.0.0 up to v6.65.0.
Patches
v6.67.0 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 ka3n1x for disclosing this vulnerability responsibly.
For more information
If you have any questions or comments about this advisory, email us at security@ghost.org.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
npm/ghostto a version that resolves this vulnerability.Fixed in 6.67.0 - Upgrade
Upgrade
Ghostto a version that resolves this vulnerability.Fixed in 6.67.0
Event History
Frequently Asked Questions
Which deployments are affected?
Ghost installations running versions from 4.0.0 through 6.65.0 are affected. The issue applies to the npm/ghost package.
What access does an attacker need?
An attacker needs Administrator access and must import a crafted content import file. Successful exploitation can consume excessive CPU and make the Ghost server unresponsive.
What version should be deployed to remediate the issue?
Upgrade Ghost to version 6.67.0, which contains the fix. Self-hosted Docker and Ghost-CLI installations should be updated using their applicable Ghost update process.