CVE-2025-5509: Quequnlong Shiyi-Blog

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

A vulnerability classified as critical has been found in quequnlong shiyi-blog up to 1.2.1. This affects an unknown part of the file /api/file/upload. The manipulation of the argument file/source leads to path traversal. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Quequnlong Shiyi-Blog: up to and including 1.2.1

Published 2025-06-03. Last modified 2026-06-17.