High severity8.8NVD Advisory· Published Apr 13, 2026· Updated Apr 17, 2026

CVE-2026-40040

Description

Pachno 1.0.6 contains an unrestricted file upload vulnerability that allows authenticated users to upload arbitrary file types by bypassing ineffective extension filtering to the /uploadfile endpoint. Attackers can upload executable files .php5 scripts to web-accessible directories and execute them to achieve remote code execution on the server.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

RubyGems/Pachnollm-fuzzy
Range: =1.0.6
Package: https://rubygems.org/gems/pachno

Patches

Vulnerability mechanics

References

www.vulncheck.com/advisories/pachno-unrestricted-file-upload-remote-code-executionnvd
www.zeroscience.mk/en/vulnerabilities/ZSL-2026-5982.phpnvd

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