What is CVE-2026-105648?

CVE-2026-105648 is a medium-severity vulnerability in Tryghost Ghost, classified under Incomplete List of Disallowed Inputs. CVSS score: 4.0/10. Published 2026-10-05.

How severe is CVE-2026-105648?

Medium severity. CVSS v3 base score is 4.0 out of 10.

SSRF in Tryghost Ghost

CVE-2026-105648

Ghost is a Node.js content management system. From 6.0.9 until 6.65.0, a validation issue allowed some functionality, such as Webmentions, to be abused by an unauthenticated user to make limited HTTP requests to hosts in the Ghost server's internal network on some network configurations. A successful attack would not result in any response data being returned. This issue is fixed in version 6.65.0.

Published 2026-10-05 · last modified 2026-10-06.

CVSS v3 metric

CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Tryghost Ghost — versions >= 6.0.9, < 6.65.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-105648?: CVE-2026-105648 is a medium-severity vulnerability in Tryghost Ghost, classified under Incomplete List of Disallowed Inputs. CVSS score: 4.0/10. Published 2026-10-05.
How severe is CVE-2026-105648?: Medium severity. CVSS v3 base score is 4.0 out of 10.