What’s Vulnerable › Vulnerabilities

CVE-2026-103283: Ghost 6.20.0 before 6.57.1 Authentication Bypass via Session Handling

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-01 · updated 2026-10-06
• Weakness: CWE-613

Description

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.

Affected products

• TryGhost Ghost: from 6.20.0 before 6.57.1 — fixed in 6.57.1

How to fix

Upgrade to a fixed version: TryGhost Ghost 6.57.1. Check the vendor advisory for mitigations.

References

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

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