What is CVE-2026-53946?

CVE-2026-53946 is a medium-severity vulnerability in Tryghost Ghost, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.4/10. Published 2026-06-24.

How severe is CVE-2026-53946?

Medium severity. CVSS v3 base score is 5.4 out of 10.

SSRF in Tryghost Ghost

CVE-2026-53946

Ghost is a Node.js content management system. From 6.19.4 until 6.21.1, when re-rendering posts, Ghost would refetch missing image dimensions by issuing an outbound HTTP request to the URL stored on an image card — without restricting that…

Vulnerability class: SSRF (Server-Side Request Forgery)

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Tryghost Ghost — versions >= 6.19.4, < 6.21.1

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-53946?: CVE-2026-53946 is a medium-severity vulnerability in Tryghost Ghost, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.4/10. Published 2026-06-24.
How severe is CVE-2026-53946?: Medium severity. CVSS v3 base score is 5.4 out of 10.