CVE-2026-128019
FrankenPHP before 1.13.4 Information Disclosure via Per-Request Environment Variable Leak
CVSS Score
4.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-200 |
| Vendor | php |
| Product | frankenphp |
| Ecosystems | |
| Industries | Technology |
| Published | Nov 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
php / frankenphp
0 < 1.13.4
References
github.com: https://github.com/php/frankenphp/security/advisories/GHSA-8386-64gm-3m8q github.com: https://github.com/php/frankenphp/commit/72f9366de07093ba3f524af3e6c73451012e5199 vulncheck.com: https://www.vulncheck.com/advisories/frankenphp-before-1.13.4-information-disclosure-via-per-request-environment-variable-leak
Credits
🔍 inanna-malick