SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

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…

CRITICAL 9.8EPSS 6.80%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (6.80%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
6.80% probability · 94th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-704
Affected
php/ext-http
Source
cve@mitre.org
EPSS trend
0%5%10%27 October 2026: 6.80%27 October 202627 October 2026

EPSS 6.8% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.