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CVE-2026-26000— XWiki Platform affected by click-jacking through CSS injection in comments

Quick assessment

Affected
xwiki xwiki-platform
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.

XWiki Platform是XWiki开源的一套用于创建Web协作应用程序的Wiki平台。 XWiki Platform 17.9.0之前版本、17.4.6之前版本和16.10.13之前版本存在安全漏洞，该漏洞源于可能使用注释注入CSS，将整个wiki转换为指向恶意页面的链接区域。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.35% · P27
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I. Basic Information for CVE-2026-26000

Vulnerability Information
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Vulnerability Title
XWiki Platform affected by click-jacking through CSS injection in comments
Source: CVE Program / CVE List V5
Vulnerability Description
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Prior to 17.9.0, 17.4.6, and 16.10.13, it's possible using comments to inject CSS that would transform the full wiki in a link area leading to a malicious page. This vulnerability is fixed in 17.9.0, 17.4.6, and 16.10.13.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
不当限制渲染UI层或帧
Source: CVE Program / CVE List V5
Vulnerability Title
XWiki Platform 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
XWiki Platform是XWiki开源的一套用于创建Web协作应用程序的Wiki平台。 XWiki Platform 17.9.0之前版本、17.4.6之前版本和16.10.13之前版本存在安全漏洞，该漏洞源于可能使用注释注入CSS，将整个wiki转换为指向恶意页面的链接区域。
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
xwiki xwiki-platform >= 17.5.0, < 17.9.0 -

II. Public POCs for CVE-2026-26000

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III. Intelligence Information for CVE-2026-26000

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Vendor Advisories for CVE-2026-26000 (1)

IV. Related Vulnerabilities

Same product: xwiki-platform
Same vendor: xwiki
Same weakness: CWE-1021

V. Comments for CVE-2026-26000

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