CVE-2025-1217 MEDIUM

CVE-2025-1217: Header parser of http stream wrapper does not handle folded headers

Vendor Php Group
Product PHP
Weakness CWE-20 · Input validation
Published March 29, 2025
Last update November 3, 2025

CVSS base score

6.3/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/AU:Y/R:A

What the vulnerability does

01Description

In PHP from 8.1.* before 8.1.32, from 8.2.* before 8.2.28, from 8.3.* before 8.3.19, from 8.4.* before 8.4.5, when http request module parses HTTP response obtained from a server, folded headers are parsed incorrectly, which may lead to misinterpreting the response and using incorrect headers, MIME types, etc.

Key dates

02Disclosure timeline

March 29, 2025 CVE published
November 3, 2025 Record updated