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CVE-2026-129484— Kroki before 0.36.0 Reflected XSS via /goat/svg Color Scheme Options

Quick assessment

Affected
yuzutech kroki
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.

Kroki 0.36.0 之前的版本包含一个反射型跨站脚本（XSS）漏洞，允许未经身份验证的攻击者通过未经验证的 和 选项注入脚本。攻击者可以构造一个 GET URL，其选项值会闭合 SVG 的 style 元素，从而在受害者打开该链接时，在 Kroki 的源（origin）上执行 JavaScript。

CVSS 6.1 · Medium

Affected Version Matrix 2

VendorProduct Version RangeStatus
yuzutech kroki < 0.36.0 affected
0.36.0 unaffected
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I. Basic Information for CVE-2026-129484

Vulnerability Information
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Vulnerability Title
Kroki before 0.36.0 Reflected XSS via /goat/svg Color Scheme Options
Source: CVE Program / CVE List V5
Vulnerability Description
Kroki before 0.36.0 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts via unvalidated svg-color-dark-scheme and svg-color-light-scheme options. Attackers can craft a GET /goat/svg URL whose option value closes the SVG style element, executing JavaScript in the Kroki origin when victims open it.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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

Affected Products

Vendor Product Affected Versions CPE Subscribe
yuzutech kroki 0 ~ 0.36.0 -

II. Public POCs for CVE-2026-129484

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-129484

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Patches & Fixes for CVE-2026-129484 (2)

Vendor Advisories for CVE-2026-129484 (2)

Vendor Pages for CVE-2026-129484 (1)

IV. Related Vulnerabilities

Same product: kroki
Same vendor: yuzutech
Same weakness: CWE-79