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CVE-2026-103286

Ghost 2.21.0 before 6.56.0 Privilege Escalation via Notifications

CVSS 4.0 8.5 HIGHCVSS 3.1 7.3 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-103286

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-103286

Published

Ghost

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "TryGhost",
                    "product": "Ghost",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:npm/ghost",
                    "versions": [
                        {
                            "version": "2.21.0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "6.56.0"
                        },
                        {
                            "version": "6.56.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON