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CVE-2026-24778— Ghost vulnerable to XSS via malicious Portal preview links

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开源的一个托管服务。 Ghost 5.43.0至5.12.04版本和6.0.0至6.14.0版本存在跨站脚本漏洞，该漏洞源于特制链接可能执行JavaScript，可能导致账户接管。

CVSS 8.8 · High EPSS 0.29% · P20
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I. Basic Information for CVE-2026-24778

Vulnerability Information
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Vulnerability Title
Ghost vulnerable to XSS via malicious Portal preview links
Source: CVE Program / CVE List V5
Vulnerability Description
Ghost is an open source content management system. In Ghost versions 5.43.0 through 5.12.04 and 6.0.0 through 6.14.0, an attacker was able to craft a malicious link that, when accessed by an authenticated staff user or member, would execute JavaScript with the victim's permissions, potentially leading to account takeover. Ghost Portal versions 2.29.1 through 2.51.4 and 2.52.0 through 2.57.0 were vulnerable to this issue. Ghost automatically loads the latest patch of the members Portal component via CDN. For Ghost 5.x users, upgrading to v5.121.0 or later fixes the vulnerability. v5.121.0 loads Portal v2.51.5, which contains the patch. For Ghost 6.x users, upgrading to v6.15.0 or later fixes the vulnerability. v6.15.0 loads Portal v2.57.1, which contains the patch. For Ghost installations using a customized or self-hosted version of Portal, it will be necessary to manually rebuild from or update to the latest patch version.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Ghost 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ghost是Ghost开源的一个托管服务。 Ghost 5.43.0至5.12.04版本和6.0.0至6.14.0版本存在跨站脚本漏洞，该漏洞源于特制链接可能执行JavaScript，可能导致账户接管。
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 @tryghost/portal >= 2.29.1, < 2.51.5 -

II. Public POCs for CVE-2026-24778

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III. Intelligence Information for CVE-2026-24778

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Patches & Fixes for CVE-2026-24778 (1)

Vendor Advisories for CVE-2026-24778 (1)

IV. Related Vulnerabilities

Same product: Ghost
Same vendor: TryGhost
Same weakness: CWE-79

V. Comments for CVE-2026-24778

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