CVE-2026-128019

EUVD-2026-125083
FrankenPHP before 1.13.4 contains an information disclosure vulnerability in worker mode that leaks per-request environment variables into later requests on the same PHP thread. Attackers can read values set via env directives with request placeholders or WithRequestEnv() through getenv() or $_SERVER, causing applications to act on another user's routing, tenant, or authorization values.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
4.8 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 24.79%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
phpfrankenphp
𝑥
< 1.13.4
CNA
Common Weakness Enumeration
References
https://github.com/php/frankenphp/commit/72f9366de07093ba3f524af3e6c73451012e5199
https://github.com/php/frankenphp/security/advisories/GHSA-8386-64gm-3m8q
https://www.vulncheck.com/advisories/frankenphp-before-1.13.4-information-disclosure-via-per-request-environment-variable-leak