CVE-2016-7398
A type confusion vulnerability in the merge_param() function of php_http_params.c in PHP's pecl...
CVE-2016-7398 is a critical vulnerability (CVSS 9.8) in Php Ext-http, published September 6, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 6.80%, the 94th percentile. Fixed in php-pecl-http 3.1.0+2.6.0-1.
- Severity
- 9.8 CriticalCVSS 3.1, NVD
- Exploit chance
- 6.80%EPSS, 94th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
3.1.0+2.6.0-1php-pecl-http +4 more
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
php-pecl-httpDebian:12 | before 3.1.0+2.6.0-1 | 3.1.0+2.6.0-1 |
php-pecl-httpDebian:13 | before 3.1.0+2.6.0-1 | 3.1.0+2.6.0-1 |
php-pecl-httpDebian:14 | before 3.1.0+2.6.0-1 | 3.1.0+2.6.0-1 |
php-pecl-httpDebian:8 | before 2.0.4-1+deb8u1, plus listed versions 2.0.4-1 | 2.0.4-1+deb8u1 |
php-pecl-httpUbuntu:Pro:16.04:LTS | before 3.0.1-0ubuntu5+esm1, plus listed versions 2.0.4-1build13.0.1-0ubuntu23.0.1-0ubuntu33.0.1-0ubuntu43.0.1-0ubuntu5 | 3.0.1-0ubuntu5+esm1 |
What each source reports
NVD Score used
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.
- Record
CVE-2016-7398- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-704
- Updated
- 2026-11-02
CVE ListNo score
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.
- Record
CVE-2016-7398- Updated
- 2026-11-02
EUVDEUVD-2016-8254No score
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.
- Record
EUVD-2016-8254- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jx2x-3hjr-6vp8
A type confusion vulnerability in the merge_param() function of php_http_params.c in PHP's pecl...
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.
- Record
GHSA-jx2x-3hjr-6vp8- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-704
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2016-7398- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2016-7398
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.
- Record
DEBIAN-CVE-2016-7398- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2016-7398
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.
- Record
UBUNTU-CVE-2016-7398- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-12
OSVUSN-9055-1No score
php-pecl-http vulnerability
It was discovered that pecl_http incorrectly handled certain HTTP request parameters, leading to a type confusion. A remote attacker could possibly use this issue to cause PHP to crash, resulting in a denial of service, or execute arbitrary code.
- Record
USN-9055-1- Updated
- 2026-11-13
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases | ||
| affected, references | OSV | |
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.