---
id: CVE-2025-61681
title: KUNO CMS is a fully deployable full-stack blog application
summary: >-
  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 …
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'
cwe:
  - CWE-79
  - CWE-434
published: '2025-10-03'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T22:10:00.563'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-61681'
references:
  - url: >-
      https://github.com/xuemian168/kuno/commit/fc486b5c9091b607f82bf7b354d18f25204f7dc6
    label: security-advisories@github.com
  - url: 'https://github.com/xuemian168/kuno/releases/tag/v1.3.14'
    label: security-advisories@github.com
  - url: 'https://github.com/xuemian168/kuno/security/advisories/GHSA-q3w2-2vqp-gx3r'
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00245
epssPercentile: 0.14385
ingestedAt: '2026-10-08T22:11:53.779Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.