CVE-2025-61681
Kuno is Vulnerable to Stored XSS Attack via SVG File Upload
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.
INFO
Published Date :
Oct. 3, 2025, 10:15 p.m.
Last Modified :
Oct. 8, 2026, 10:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update KUNO CMS to version 1.3.14.
- Implement stricter file type validation.
- Perform file content analysis.
- Enforce file extension whitelisting.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-61681.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-61681 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-61681
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-61681 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-61681 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Translated by [email protected]
Oct. 08, 2026
Action Type Old Value New Value Added Translation Title: kuno de xuemian168, Description: KUNO CMS es una aplicación de blog full-stack completamente desplegable. Las versiones 1.3.13 e inferiores contienen fallos de validación en su funcionalidad de carga de archivos que pueden ser explotados para XSS almacenado. El endpoint de carga solo valida los tipos de archivo basándose en los encabezados Content-Type, carece de análisis de contenido de archivo y restricciones de lista blanca de extensión, permitiendo a los atacantes cargar archivos SVG que contienen scripts maliciosos (disfrazados como imágenes). Cuando los usuarios acceden a las páginas de recursos cargados, se ejecuta JavaScript arbitrario en sus navegadores. Este problema está solucionado en la versión 1.3.14. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'xuemian168', 'product': 'kuno', 'versions': [{'status': 'affected', 'version': '< 1.3.14'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2025-61681', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2025-10-06T15:44:43.600477Z'} -
New CVE Received by [email protected]
Oct. 03, 2025
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Added CWE CWE-79 Added CWE CWE-434 Added Reference https://github.com/xuemian168/kuno/commit/fc486b5c9091b607f82bf7b354d18f25204f7dc6 Added Reference https://github.com/xuemian168/kuno/releases/tag/v1.3.14 Added Reference https://github.com/xuemian168/kuno/security/advisories/GHSA-q3w2-2vqp-gx3r