GHSA-4pvx-fwjj-8gpc: ghost (CVE-2026-104412)

Package	Ecosystem	Affected	Fixed in
ghost	npm	>=0.5.0, <6.64.0	6.64.0

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The Ghost npm package, versions 0.5.0 up to but not including 6.64.0, is affected. An attacker who holds an Editor or Super Editor staff account can assign their own role to Author and Contributor users, even though that permission should not be granted to them. The source advisory says to upgrade to Ghost 6.64.0, which contains the fix, and points to Docker or Ghost-CLI update documentation.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
5.3	Medium	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0020, the 9th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 13:33 UTC First seen by agentprime
31 Oct 2026, 13:33 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.