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CVE-2026-70589— Ghost: Archived Offers can be Redeemed

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.

TryGhost Ghost是TryGhost组织开源的一个专注内容发布的托管平台。 TryGhost Ghost 4.22.0版本至6.54.1之前版本存在输入验证错误漏洞，该漏洞源于缺失验证检查，可能导致用户兑换不再活跃的订阅优惠。

CVSS 4.8 · Medium EPSS 0.27% · P17

Affected Version Matrix 1

VendorProduct Version RangeStatus
TryGhost Ghost >= 4.22.0, < 6.54.1 affected
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I. Basic Information for CVE-2026-70589

Vulnerability Information
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Vulnerability Title
Ghost: Archived Offers can be Redeemed
Source: CVE Program / CVE List V5
Vulnerability Description
Ghost is a Node.js content management system. From 4.22.0 until 6.54.1, a missing validation check allowed users to redeem subscription offers that were no longer active. This issue is fixed in version 6.54.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
TryGhost Ghost 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TryGhost Ghost是TryGhost组织开源的一个专注内容发布的托管平台。 TryGhost Ghost 4.22.0版本至6.54.1之前版本存在输入验证错误漏洞，该漏洞源于缺失验证检查，可能导致用户兑换不再活跃的订阅优惠。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
TryGhost Ghost >= 4.22.0, < 6.54.1 -

II. Public POCs for CVE-2026-70589

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III. Intelligence Information for CVE-2026-70589

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Patches & Fixes for CVE-2026-70589 (1)

Vendor Advisories for CVE-2026-70589 (1)

Same Patch Batch · TryGhost · 2026-08-04 · 7 CVEs total

CVE-2026-70594 6.7 MEDIUM Ghost: Session Fixation in Ghost Admin
CVE-2026-70593 6.6 MEDIUM Ghost: Theme Upload Path Traversal
CVE-2026-70592 5.5 MEDIUM Ghost: Database Backup Path Traversal
CVE-2026-70588 5.0 MEDIUM Ghost: Cross-Site Scripting in Universal Import
CVE-2026-70590 4.8 MEDIUM Ghost: Blind Password Hash Disclosure in Ghost Admin API
CVE-2026-70591 4.1 MEDIUM Ghost: Server-Side Request Forgery in Image Fetching

IV. Related Vulnerabilities

Same product: Ghost
Same vendor: TryGhost
Same weakness: CWE-20

V. Comments for CVE-2026-70589

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