XSS in Tryghost Ghost
CVE-2026-70588
Ghost is a Node.js content management system. From 5.26.0 until 6.54.1, the Universal Import feature in Ghost Admin failed to properly sanitize imported content resulting in XSS in post content. This issue is fixed in version 6.54.1.
Vulnerability class: XSS (Cross-Site Scripting)
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:L.
Affected products
- Tryghost Ghost — versions >= 5.26.0, < 6.54.1
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-70588?
- CVE-2026-70588 is a medium-severity vulnerability in Tryghost Ghost, classified under Cross-site Scripting. CVSS score: 5.0/10. Published 2026-08-04.
- How severe is CVE-2026-70588?
- Medium severity. CVSS v3 base score is 5.0 out of 10.