Vulnerability details
CVE-2026-105643
TryGhost Ghost
Ghost: Stored XSS via Embed Card Previews
CVSS 3.1
7.3High
Official description
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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.3High | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| TryGhost | Ghost | >= 6.34.0, < 6.67.0 | CVEProject cvelistV5 (CNA) |
References and advisories
2
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Details
- Published
- 2026-10-05
- Last updated
- 2026-10-06
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.27%
Probability of exploitation in 30 days
20.2%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CWE-653Improper Isolation or Compartmentalization