CVE-2026-128016

HIGH
MEDIUM Priority: 0.04 BB Relevance: 67/100
Published: 2026-11-13 Modified: 2026-11-13 First seen: 2026-11-13 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
AT: Present
VC: Low
VI: None
VA: High

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
php frankenphp 0 < 1.13.4
php frankenphp 0 < 1.13.4

Bug Bounty Relevance

67 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

8.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.42%
Raw Score 0.004230
Percentile 37.1%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00423
2026-11-13
0.00453

Intelligence Sources

mitre ref →
nvd ref →