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Vulnerability record · CVE-2016-7398 · published 6 September 2019

CVE-2016-7398: Php ext-http vulnerability

Php · Ext Http

A type confusion vulnerability in the merge_param() function of php_http_params.c in PHP's pecl-http extension 3.1.0beta2 (PHP 7) and earlier as well as 2.6.0beta2 (PHP 5) and earlier allows attackers to crash PHP and possibly execute arbitrary code via crafted HTTP requests.

9.8 CVSS 3.1 Critical EPSS 6.8% · top 6.2% CWE-704 · CWE-704
9.8CVSS 3.1 base score, v2 7.5
6.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

A type confusion vulnerability in the merge_param() function of php_http_params.c in PHP's pecl-http extension 3.1.0beta2 (PHP 7) and earlier as well as 2.6.0beta2 (PHP 5) and earlier allows attackers to crash PHP and possibly execute arbitrary code via crafted HTTP requests.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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Source: NIST National Vulnerability Database (record CVE-2016-7398), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.