GHSA-347q-26qq-h2p6: ghost (CVE-2026-104413)

Package	Ecosystem	Affected	Fixed in
ghost	npm	>=5.94.0, <6.64.0	6.64.0

Machine-written summary

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

Ghost versions from 5.94.0 up to 6.64.0 are affected. When creating a bookmark card, Ghost could store non-image files fetched from external websites as bookmark icons or thumbnails, so any staff user, including Contributors, could host arbitrary HTML on the site's domain and possibly compromise other staff users' admin sessions. Upgrade ghost to version 6.64.0, which contains the fix.

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
8.5	High	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0030, the 23rd percentile, on 5 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.