Ghost 6.20.0 Before 6.57.1 Authentication Bypass Via Session Handling

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Ghost 6.20.0 Before 6.57.1 Authentication Bypass Via Session Handling

www.vulncheck.com • October 2, 2026

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Ghost CMS Vulnerabilities: Authentication Bypass and Account Modification Risks Two vulnerabilities have been identified in the Ghost CMS platform affecting versions 5.2.0 to 6.62.0 and 6.20.0 to 6.57.1. The first vulnerability allows unauthenticated account modification during Stripe checkout, while the second enables authentication bypass via session handling. These flaws could potentially allow attackers to manipulate accounts or gain unauthorized access. The vulnerabilities are significant as they affect widely used versions of the Ghost CMS, which is utilized by numerous websites. Currently, there are no reports of, but the vulnerabilities are concerning due to their potential impact. Users are advised to prioritize patching to mitigate risks. The Ghost team has released patches for both vulnerabilities, and users are urged to update their systems immediately. 57

Extracted Entities

CWE Weaknesses (1)

CWE-287 - Improper Authentication

Vulnerabilities (1)

Authentication Bypass Via Session Handling