TryGhost up to 6.44.0 Comments Feature improper authorization

Summaryinfo

A vulnerability classified as problematic has been found in TryGhost Ghost up to 6.44.0. Affected by this vulnerability is an unknown functionality of the component Comments Feature. This manipulation causes improper authorization. This vulnerability is handled as CVE-2026-103289. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in TryGhost Ghost up to 6.44.0. It has been declared as problematic. Affected by this vulnerability is some unknown processing of the component Comments Feature. The manipulation with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality. The summary by CVE is:

Ghost from 5.9.0 before 6.44.1 contains an input validation issue in the comments feature that allows authenticated members to access comments they are not authorized to view, resulting in disclosure of restricted comment data.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-103289 since 09/30/2026. The exploitation appears to be easy. The attack can be launched remotely. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1548.002 for this issue.

Upgrading to version 6.44.1 eliminates this vulnerability.

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Productinfo

Vendor

• TryGhost

Name

• Ghost

Version

• 6.0
• 6.1
• 6.2
• 6.3
• 6.4
• 6.5
• 6.6
• 6.7
• 6.8
• 6.9
• 6.10
• 6.11
• 6.12
• 6.13
• 6.14
• 6.15
• 6.16
• 6.17
• 6.18
• 6.19
• 6.20
• 6.21
• 6.22
• 6.23
• 6.24
• 6.25
• 6.26
• 6.27
• 6.28
• 6.29
• 6.30
• 6.31
• 6.32
• 6.33
• 6.34
• 6.35
• 6.36
• 6.37
• 6.38
• 6.39
• 6.40
• 6.41
• 6.42
• 6.43
• 6.44.0

Website

• Product: https://github.com/TryGhost/Ghost/

CPE 2.3info

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