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GHSA-4pvx-fwjj-8gpc

MediumCVSS 4.3 / 10
Published Oct 7, 2026·Last modified Oct 7, 2026
Affected Components(1)
npm logoghost
0.5.0 – 6.64.0
Description

Impact

Staff users with the Editor or Super Editor role were able to assign their own role to Author and Contributor users, despite not having permission to assign that role.

Vulnerable versions

This vulnerability is present in Ghost from v0.5.0 up to v6.64.0.

Patches

v6.64.0 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 SecBuddyF of Tencent KeenLab, Santosh Kumar Puppala, Pedro Pinho, and Nhat Anh Vu for disclosing this vulnerability responsibly.

For more information

If you have any questions or comments about this advisory, email us at security@ghost.org.

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Risk Scores
Base Score
4.3

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the integrity of the data.

Threat Intelligence
4.0

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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Medium severity
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