GHSA-fwh9-qg68-vxp4: ghost (CVE-2026-105646)

Package	Ecosystem	Affected	Fixed in
ghost	npm	>=4.0.0, <6.67.0	6.67.0

Machine-written summary

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

Ghost versions from 4.0.0 up to 6.67.0 (fixed in 6.67.0) are affected by a regular expression denial of service in the content import feature. An attacker who has Administrator access can supply a crafted content import file that causes excessive CPU usage and makes the Ghost server unresponsive. Upgrade to Ghost 6.67.0 or later.

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
4.9	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0035, the 28th percentile, on 13 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.