XSS in Tryghost Ghost

CVE-2026-70596

Ghost is a Node.js content management system. From 4.9.0 until 6.54.1, an input validation issue allowed any staff user to create a post with content in feature_image_caption that could be used to hijack another staff user's Ghost Admin se…

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-70596?
CVE-2026-70596 is a medium-severity vulnerability in Tryghost Ghost, classified under Cross-site Scripting. CVSS score: 4.3/10. Published 2026-08-05.
How severe is CVE-2026-70596?
Medium severity. CVSS v3 base score is 4.3 out of 10.