CVE-2026-103286 Ghost - Privilege Escalation

Ghost >2.21.0 <6.56.0 contains a privilege escalation caused by improper authorization checks in the notifications system, letting low-privilege staff users escalate to higher-privilege staff roles, exploit requires low-privilege staff access.

CVSS base score 7.3 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.18% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Privilege Escalation
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Published
1 October 2026
Updated
15 October 2026
Weakness
CWE-266

Vendor fix

Update to version 6.56.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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