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CVE-2025-61681— Kuno is Vulnerable to Stored XSS Attack via SVG File Upload

Quick assessment

Affected
xuemian168 kuno
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.

KUNO是XueMian (ICT.RUN)个人开发者的一个博客应用程序 KUNO 1.3.13及之前版本存在代码问题漏洞，该漏洞源于文件上传功能验证不足，可能导致存储型跨站脚本攻击。

CVSS 5.4 · Medium EPSS 0.23% · P13
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I. Basic Information for CVE-2025-61681

Vulnerability Information
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Vulnerability Title
Kuno is Vulnerable to Stored XSS Attack via SVG File Upload
Source: CVE Program / CVE List V5
Vulnerability Description
KUNO CMS is a fully deployable full-stack blog application. Versions 1.3.13 and below contain validation flaws in its file upload functionality that can be exploited for stored XSS. The upload endpoint only validates file types based on Content-Type headers, lacks file content analysis and extension whitelist restrictions, allowing attackers to upload SVG files containing malicious scripts (disguised as images). When users access the uploaded resource pages, arbitrary JavaScript executes in their browsers. This issue is fixed in version 1.3.14.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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
KUNO 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
KUNO是XueMian (ICT.RUN)个人开发者的一个博客应用程序 KUNO 1.3.13及之前版本存在代码问题漏洞，该漏洞源于文件上传功能验证不足，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
xuemian168 kuno < 1.3.14 -

II. Public POCs for CVE-2025-61681

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III. Intelligence Information for CVE-2025-61681

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Patches & Fixes for CVE-2025-61681 (1)

Proof of Concept for CVE-2025-61681 (1)

IV. Related Vulnerabilities

Same product: kuno
Same vendor: xuemian168
Same weakness: CWE-79

V. Comments for CVE-2025-61681

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