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CVE-2026-105646— Ghost: Regular Expression Denial of Service in Content Import

Quick assessment

Affected
TryGhost Ghost
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Ghost 是一个基于 Node.js 的内容管理系统。在版本 4.0.0 至 6.67.0 之间，精心构造的内容导入文件可能导致 CPU 使用率过高，从而使 Ghost 服务器无响应。此漏洞的利用需要管理员权限。该问题已在版本 6.67.0 中修复。

CVSS 4.9 · Medium

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
TryGhost Ghost >= 4.0.0, < 6.67.0 affected
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I. Basic Information for CVE-2026-105646

Vulnerability Information
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Vulnerability Title
Ghost: Regular Expression Denial of Service in Content Import
Source: CVE Program / CVE List V5
Vulnerability Description
Ghost is a Node.js content management system. From 4.0.0 until 6.67.0, a crafted content import file could cause excessive CPU usage, making the Ghost server unresponsive. Exploiting this requires Administrator access. This issue is fixed in version 6.67.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
TryGhost Ghost >= 4.0.0, < 6.67.0 -

II. Public POCs for CVE-2026-105646

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III. Intelligence Information for CVE-2026-105646

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Other References for CVE-2026-105646 (4)

Same Patch Batch · TryGhost · 2026-10-05 · 20 CVEs total

CVE-2026-105642 8.8 HIGH Ghost: Remote Code Execution via Bookmark Card Images
CVE-2026-105650 8.1 HIGH Ghost: Stored XSS via oEmbed Photo Responses
CVE-2026-105675 7.5 HIGH Ghost: Invite Token Disclosure in Ghost Admin API
CVE-2026-105643 7.3 HIGH Ghost: Stored XSS via Embed Card Previews
CVE-2026-105651 7.3 HIGH Ghost: Stored XSS via Bookmark Card Images
CVE-2026-105679 7.3 HIGH Ghost: Stored XSS via File Uploads on Local Storage
CVE-2026-105649 7.3 HIGH Ghost: Stored XSS via SVG Uploads Bypassing Sanitization
CVE-2026-105677 7.2 HIGH Ghost: Remote Code Execution via Theme Translation Files
CVE-2026-105644 6.8 MEDIUM Ghost: Stored XSS via SVG Files in Content Imports
CVE-2026-105681 6.5 MEDIUM Ghost: Authorization Bypass in Comments Feature
CVE-2026-105680 6.5 MEDIUM Ghost: Authorization Issue Allowed Author Role to Delete any Post
CVE-2026-105645 4.9 MEDIUM Ghost: Regular Expression Denial of Service in External Media Inliner
CVE-2026-105676 4.9 MEDIUM Ghost: Path Traversal via Locale Setting
CVE-2026-105678 4.3 MEDIUM Ghost: Editors Could Promote Staff Users to Their Own Role
CVE-2026-105647 4.0 MEDIUM Ghost: Server-Side Request Forgery in Bookmark Fetching
CVE-2026-105648 4.0 MEDIUM Ghost: Private IP Filtering Bypass via IPv6 Transition Addresses
CVE-2026-105683 3.8 LOW Ghost: Path Traversal Vulnerability in Ghost ImageSize Service
CVE-2026-105652 3.1 LOW Ghost: Password Hash Ordering Disclosure in Ghost Admin API
CVE-2026-105682 2.7 LOW Ghost: Server-Side Request Forgery in Webhook Trigger

IV. Related Vulnerabilities

Same product: Ghost
Same vendor: TryGhost
Same weakness: CWE-1333

V. Comments for CVE-2026-105646

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