CVE-2026-103283

HIGH 8.1

Ghost 6.20.0 before 6.57.1 Authentication Bypass via Session Handling

CVSS Score

8.1

EPSS Score

0.0%

EPSS Percentile

0th

Ghost versions 6.20.0 before 6.57.1 contain a session handling vulnerability that allows authenticated staff users to log in as any other staff user with only the password, bypassing two-factor authentication. Attackers with valid staff credentials can exploit improper session management to impersonate other staff members and gain unauthorized access to administrative functions.

CWE	CWE-613
Vendor	tryghost
Product	ghost
Published	Oct 1, 2026

Stay Ahead of the Next One

Get instant alerts for tryghost ghost

Be the first to know when new high vulnerabilities affecting tryghost ghost are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

TryGhost / Ghost

6.20.0 < 6.57.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/TryGhost/Ghost/security/advisories/GHSA-q55r-w7fh-rmh6 vulncheck.com: https://www.vulncheck.com/advisories/ghost-6.20.0-before-6.57.1-authentication-bypass-via-session-handling

Credits

🔍 jaeyoon-kim-dev 🔍 doanmanhducz