CVE-2026-105648: CWE-184: Incomplete List of Disallowed Inputs in TryGhost Ghost
Description
A validation issue in Ghost CMS versions from 6.0.9 up to but not including 6.65.0 allowed unauthenticated users to abuse certain functionality, such as Webmentions, to make limited HTTP requests to hosts within the Ghost server's internal network on some network configurations. The vulnerability does not expose response data to the attacker. This issue has been fixed in version 6.65.0.
CVSS v3.1
Score 4.0medium
Affected software
TryGhost
Ghost
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Ghost, a Node.js content management system, contained a validation flaw in versions >=6.0.9 and <6.65.0 that permitted unauthenticated users to leverage features like Webmentions to perform limited HTTP requests to internal network hosts of the Ghost server under certain network configurations. The flaw is categorized under CWE-184 (Incomplete List of Disallowed Inputs) and CWE-918 (Server-Side Request Forgery). Although the attacker can initiate requests, no response data is returned, limiting the impact. The vulnerability was addressed and fixed in Ghost version 6.65.0.
Potential Impact
An unauthenticated attacker can cause the Ghost server to make HTTP requests to internal network hosts, potentially enabling limited internal network reconnaissance or interaction. However, no response data is returned to the attacker, reducing the severity of the impact. There is no indication of data disclosure, integrity loss, or denial of service from this vulnerability.
Mitigation Recommendations
Upgrade Ghost to version 6.65.0 or later, where this validation issue has been fixed. No other mitigation steps are indicated or required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-10-05T16:40:39.613Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ac3f82f2cdf04f6563003db
Added to database: 10/05/2026, 19:19:11 UTC
Last enriched: 10/05/2026, 19:33:53 UTC
Last updated: 10/05/2026, 19:34:03 UTC
Views: 8
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.