CVE-2026-128026

MediumCVSS 6.4/10Last modified Nov 13, 2026

Description

FrankenPHP from 1.5.0 before 1.13.0 contains an incomplete environment sandbox vulnerability in which putenv writes to the process-wide OS environment via os.Setenv, leaking values across concurrent requests. Attackers reaching a request path that spawns child processes with the default environment through proc_open or exec can read secrets such as database passwords set by other requests.

Metrics

CVSS 3.1 6.4/10CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N

Weakness enumeration

CWE-488

Affected software

Vendor	Product	Versions
php	frankenphp	>= 1.5.0, < 1.13.0

References

Timeline

Published: Nov 13, 2026
Last modified: Nov 13, 2026
NVD status: Deferred

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