CVE-2026-103292
Ghost 0.5.3 before 6.50.0 Cross-Site Scripting via ghost_head
- State
- Published
- Severity
- 8.6 High
- Published
- Oct 1, 2026
- Updated
- Oct 1, 2026
- Reserved
- Sep 30, 2026
Description
Ghost versions from 0.5.3 through versions prior to 6.50.0 fail to sanitize the data placed in the JSON-LD HTML tag emitted by the {{ghost_head}} helper. An authenticated user with limited privileges can inject unescaped content that is rendered as script in the published page, potentially leading to compromise of a staff user's admin session when that user views the affected page.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.6 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.0 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
GhostTryGhost |
|
References
- GitHub Security Advisory (GHSA-mp9q-4q6m-44f5)vendor-advisory
- VulnCheck Advisory: Ghost 0.5.3 before 6.50.0 Cross-Site Scripting via ghost_headthird-party-advisory
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