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Medium · 6.5 CVE-2026-128016 EUVD-2026-125086GHSA-f45r-jvx9-jfvx

FrankenPHP before 1.13.4 Use-After-Free of SplTempFileObject Streams in Worker Mode

Published Nov 13, 2026 · Updated Nov 13, 2026 · Assigned by VulnCheck

Description

FrankenPHP before 1.13.4 contains a use-after-free vulnerability in worker mode that frees internal streams of SplTempFileObject or SplFileObject on php://temp instances surviving across requests. Remote clients can send requests reaching code that uses such persisted objects, causing reads of freed memory that leak garbage data or crash the process.

Affected products

VendorProductAffectedFixed
php frankenphp < 1.13.4 1.13.4

References