High severity · published Oct 1, 2026
CVE-2026-103286
Ghost 2.21.0 before 6.56.0 Privilege Escalation via Notifications
7.3
CVSS
0.2%
EPSS
No
On KEV
Description
Ghost versions from 2.21.0 before 6.56.0 contain a privilege escalation vulnerability in the notifications system that allows low-privilege staff users to escalate to higher-privilege staff roles. Attackers with low-privilege staff access can exploit the notifications system to gain elevated privileges without proper authorization checks.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GH
Ghost · TryGhost
2.21.0 before 6.56.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-103286
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-103286
vendor-advisory
https://github.com/TryGhost/Ghost/security/advisories/GHSA-pv24-pfvg-vr83
third-party-advisory
https://www.vulncheck.com/advisories/ghost-2.21.0-before-6.56.0-privilege-escalation-via-notifications
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