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CVE-2026-103278

Ghost 5.8.0 before 6.34.0 Staff Account Takeover via Admin iframe

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-2026-103278

Published

Ghost versions 5.8.0 before 6.34.0 contain an input validation vulnerability in the admin iframe that allows attackers to take over staff user accounts. Attackers with content publishing privileges can craft malicious pages that, when visited by active staff users, enable account takeover through improper input validation.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-103278

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": "5.8.0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "6.34.0"
                        },
                        {
                            "version": "6.34.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ]
                }

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