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Ghost CMS Vulnerabilities: Authentication Bypass and Account Modification Risks

Ghost CMS Vulnerabilities: Authentication Bypass and Account Modification Risks

First seen 2 Oct 2026, 01:04 UTC •
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ThreatCluster AI
ThreatCluster •October 2, 2026 at 02:07 UTC
  • •Ghost CMS versions 5.2.0 to 6.62.0 and 6.20.0 to 6.57.1 are affected by critical vulnerabilities.
  • •The vulnerabilities include unauthenticated account modification and authentication bypass.
  • •Patches are available, and users should update their systems to prevent potential exploitation.

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.

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Timeline

2026-10-02
Ghost vulnerabilities disclosed
Ghost CMS announced two vulnerabilities affecting multiple versions, urging users to update immediately.
VulnCheck
2026-10-02
Patches released
Ghost CMS released updates to address the vulnerabilities, recommending immediate application by users.
VulnCheck

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Common questions

Which versions of Ghost CMS are affected?
Ghost CMS versions 5.2.0 to 6.62.0 and 6.20.0 to 6.57.1 are affected by these vulnerabilities.
Are these vulnerabilities actively exploited?
Currently, there are no reports of active exploitation for these vulnerabilities.
What should I do to protect my site?
Update your Ghost CMS to the latest version immediately to mitigate the risks associated with these vulnerabilities.