CVE-2026-105643: high-severity vulnerability in TryGhost Ghost
Ghost: Stored XSS via Embed Card Previews
Published · Updated
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 7.3epss 0.3%
exploitation probability
0.3%top 82% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
Ghost is a Node.js content management system. From version 6.34.0 until 6.67.0, embed cards in the Ghost editor could bypass protections against stored cross-site scripting. Any staff user, including Contributors, could store scripts in post content that ran when another staff user opened the post in the editor, potentially compromising that user’s admin session. Self-hosted sites should leave the new security.embedPreviewUrl configuration option at its default value. This issue is fixed in version 6.67.0.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Affected products
TryGhost · Ghostpublic PoCs found — 1
cve_referencegithub.com/penpot/penpot/security/advisories/GHSA-qvq5-c536-pmx8unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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