CVE-2026-128026

EUVD-2026-125076
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
6.4 MEDIUM
LOCAL
HIGH
LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 2.67%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
phpfrankenphp
1.5.0 ≤
𝑥
< 1.13.0
CNA
Common Weakness Enumeration
References
https://github.com/php/frankenphp/security/advisories/GHSA-996f-w38m-f574
https://www.vulncheck.com/advisories/frankenphp-1.5.0-before-1.13.0-cross-request-environment-leakage-via-putenv