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CVE-2026-90835— michaelliao itranswarp Page Content Rendering Markdown.java Markdown.toHtml cross site scripting

Quick assessment

Affected
michaelliao itranswarp
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.

在 michaelliao 的 itranswarp 版本 2.19 及更早版本中发现了一个缺陷。受影响的组件是 Page Content Rendering（页面内容渲染） 中的 文件里的 函数。该函数在处理输入时未进行充分过滤，导致发生跨站脚本攻击（XSS）。此漏洞可被远程利用。 目前，该漏洞的利用方式（exploit）已经公开，可能被攻击者用于发起攻击。维护方虽已通过问题报告提前知悉此问题，但截至目前仍未作出回应。需要注意的是，该漏洞仅影响维护方已不再支持（no longer supported） 的产品版本

CVSS 3.5 · Low

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-90835

Vulnerability Information
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Vulnerability Title
michaelliao itranswarp Page Content Rendering Markdown.java Markdown.toHtml cross site scripting
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in michaelliao itranswarp up to 2.19. The impacted element is the function Markdown.toHtml of the file Markdown.java of the component Page Content Rendering. This manipulation causes cross site scripting. The attack may be initiated remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet. This vulnerability only affects products that are no longer supported by the maintainer.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/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

Affected Products

Vendor Product Affected Versions CPE Subscribe
michaelliao itranswarp 2.0 cpe:2.3:a:michaelliao:itranswarp:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-90835

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III. Intelligence Information for CVE-2026-90835

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Security Blog Posts for CVE-2026-90835 (1)

Other References for CVE-2026-90835 (1)

IV. Related Vulnerabilities

Same vendor: michaelliao
Same weakness: CWE-79

V. Comments for CVE-2026-90835

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