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CVE-2026-27742— Bludit <= 3.16.2 Stored XSS in Post Content

Quick assessment

Affected
Bludit Bludit
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.

Bludit是Bludit开源的一套开源的轻量级博客内容管理系统（CMS）。 Bludit 3.16.2版本存在跨站脚本漏洞，该漏洞源于帖子内容功能仅进行客户端清理，服务器端未执行等效清理，可能导致存储型跨站脚本攻击。

CVSS 5.4 · Medium EPSS 0.24% · P14

Affected Version Matrix 1

VendorProduct Version RangeStatus
Bludit Bludit ≤ 3.16.2 affected
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I. Basic Information for CVE-2026-27742

Vulnerability Information
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Vulnerability Title
Bludit <= 3.16.2 Stored XSS in Post Content
Source: CVE Program / CVE List V5
Vulnerability Description
Bludit version 3.16.2 contains a stored cross-site scripting (XSS) vulnerability in the post content functionality. The application performs client-side sanitation of content input but does not enforce equivalent sanitation on the server side. An authenticated user can inject arbitrary JavaScript into the content field of a post, which is stored and later rendered to other users without proper output encoding. When viewed, the injected script executes in the context of the victim’s browser, allowing session hijacking, credential theft, content manipulation, or other actions within the user’s privileges.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
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
Bludit 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bludit是Bludit开源的一套开源的轻量级博客内容管理系统（CMS）。 Bludit 3.16.2版本存在跨站脚本漏洞，该漏洞源于帖子内容功能仅进行客户端清理，服务器端未执行等效清理，可能导致存储型跨站脚本攻击。
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
Bludit Bludit 0 ~ 3.16.2 -

II. Public POCs for CVE-2026-27742

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III. Intelligence Information for CVE-2026-27742

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IV. Related Vulnerabilities

Same product: Bludit
Same vendor: Bludit
Same weakness: CWE-79

V. Comments for CVE-2026-27742

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