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CVE-2026-53949— Ghost Content API filter bypass reveals private fields

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Ghost基金会开源的一款内容管理平台。 Ghost 5.46.1版本至6.21.2之前版本存在安全漏洞，该漏洞源于对公开API端点过滤器的验证可被部分绕过，可能导致通过暴力攻击泄露私有字段。以下版本受到影响：5.46.1版本至6.21.2之前版本。

CVSS 5.3 · Medium EPSS 0.36% · P27

Affected Version Matrix 1

VendorProduct Version RangeStatus
TryGhost Ghost >= 5.46.1, < 6.21.2 affected
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I. Basic Information for CVE-2026-53949

Vulnerability Information
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Vulnerability Title
Ghost Content API filter bypass reveals private fields
Source: CVE Program / CVE List V5
Vulnerability Description
Ghost is a Node.js content management system. From 5.46.1 until 6.21.2, the validation applied to filters on the public API endpoints could be partially bypassed, making it possible to reveal private fields via a brute force attack. If SQLite was used as the database password hashes were fully accessible. If MySQL was used as the database the password hashes' case (uppercase / lowercase) would have been lost, which would likely have rendered a further brute force attack on the discovered hashes fruitless. This vulnerability is fixed in 6.21.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Ghost 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ghost是Ghost基金会开源的一款内容管理平台。 Ghost 5.46.1版本至6.21.2之前版本存在安全漏洞，该漏洞源于对公开API端点过滤器的验证可被部分绕过，可能导致通过暴力攻击泄露私有字段。以下版本受到影响：5.46.1版本至6.21.2之前版本。
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 >= 5.46.1, < 6.21.2 -

II. Public POCs for CVE-2026-53949

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III. Intelligence Information for CVE-2026-53949

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Vendor Advisories for CVE-2026-53949 (1)

Same Patch Batch · TryGhost · 2026-06-24 · 8 CVEs total

CVE-2026-53943 9.6 CRITICAL Ghost: Cache-poisoning XSS in Ghost frontend via x-ghost-preview header
CVE-2026-53950 7.5 HIGH @tryghost/activitypub: XSS in Ghost's ActivityPub client
CVE-2026-53944 5.8 MEDIUM Ghost: Private IP filtering bypass to make server-side requests to internal services
CVE-2026-53948 5.4 MEDIUM Ghost: File Upload Content-Type Spoofing
CVE-2026-53946 5.4 MEDIUM Ghost: Mobiledoc image-size fetch SSRF
CVE-2026-53947 5.3 MEDIUM Ghost: Member existence leak via magic link sign-in response
CVE-2026-53945 4.0 MEDIUM Ghost: Server-side request forgery via DNS rebinding in external request handling

IV. Related Vulnerabilities

Same product: Ghost
Same vendor: TryGhost
Same weakness: CWE-200

V. Comments for CVE-2026-53949

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