What’s Vulnerable › Vulnerabilities

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

• Severity: low (CVSS 3.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-03-29 · updated 2026-06-17
• Weakness: CWE-20

Description

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.

Affected products

• PHP: from 8.1.0 before 8.1.32; from 8.2.0 before 8.2.28; from 8.3.0 before 8.3.19; from 8.4.0 before 8.4.5 — fixed in 8.1.32, 8.2.28, 8.3.19, 8.4.5

How to fix

Upgrade to a fixed version: PHP 8.1.32, 8.2.28, 8.3.19, 8.4.5. Check the vendor advisory for mitigations.

References

• https://github.com/php/php-src/security/advisories/GHSA-v8xr-gpvj-cx9g
• https://lists.debian.org/debian-lts-announce/2025/03/msg00014.html
• https://security.netapp.com/advisory/ntap-20250523-0008/
• https://github.com/php/php-src/security/advisories/GHSA-v8xr-gpvj-cx9g

Get alerted when CVE-2025-1217 or the next vulnerability affects your stack