CVE-2025-61681

MediumCVSS 5.4

Published: 03/10/2025(UTC)Updated: 08/10/2026(UTC)Translated: 09/10/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.25%

14th percentile - higher than 14% of all known CVEs

Summary

KUNO CMS versions 1.3.13 and below have validation flaws in file upload functionality that can be exploited for stored XSS. Validation only checks Content-Type headers, allowing SVG files with malicious scripts. Fixed in version 1.3.14.

Risk Assessment

Users accessing uploaded resources may execute arbitrary JavaScript, potentially leading to data theft or account takeover.

Recommendation

Update KUNO CMS to version 1.3.14 or later.

Other vulnerabilities in KUNO CMS

CVE-2025-61768Medium
In KUNO CMS prior to version 1.3.15, an SSRF vulnerability exists in the Media module of the admin panel. A logged-in administrator can upload a crafted SVG file with an external image reference, causing the server to initiate an outgoing connection to an arbitrary external URL. This can lead to information disclosure or internal network probing. Version 1.3.15 contains a fix.

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS