EIP-2026-104663

PRE-CVE

PHP 5.4.3 - wddx_serialize_* / stream_bucket_* Variant Object Null Ptr Dereference

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-104663. PoCs published by condis.

AI-analyzed exploit summary This PHP script demonstrates a null pointer dereference vulnerability in PHP <= 5.4.3 when handling Variant objects with wddx_serialize_value or wddx_serialize_vars functions, leading to a crash (DoS). The exploit triggers the vulnerability by passing a Variant object to the affected functions.

Description

PHP 5.4.3 - wddx_serialize_* / stream_bucket_* Variant Object Null Ptr Dereference

Exploits (1)

exploitdb WORKING POC VERIFIED
by condis · phpdosphp
https://www.exploit-db.com/exploits/18909

This PHP script demonstrates a null pointer dereference vulnerability in PHP <= 5.4.3 when handling Variant objects with wddx_serialize_value or wddx_serialize_vars functions, leading to a crash (DoS). The exploit triggers the vulnerability by passing a Variant object to the affected functions.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: PHP <= 5.4.3 (Windows only)
No auth needed
Prerequisites: PHP with Variant object support (Windows only) · PHP version <= 5.4.3
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026