CVE-2026-40040 | THREATINT

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.

PUBLISHED Reserved 2026-04-08 | Published 2026-04-13 | Updated 2026-05-12 | Assigner VulnCheck

HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem types

Unrestricted Upload of File with Dangerous Type

Product status

1.0.6

affected

Credits

LiquidWorm as Gjoko Krstic of Zero Science Lab finder

References

www.zeroscience.mk/en/vulnerabilities/ZSL-2026-5982.php (Zero Science Lab Disclosure) third-party-advisory

www.vulncheck.com/...icted-file-upload-remote-code-execution (VulnCheck Advisory: Pachno 1.0.6 Unrestricted File Upload Remote Code Execution) third-party-advisory

cve.org (CVE-2026-40040)

nvd.nist.gov (CVE-2026-40040)

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