What’s Vulnerable › Vulnerabilities

CVE-2025-1734: Streams HTTP wrapper does not fail for headers with invalid name and no colon

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-03-30 · 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 receiving headers from HTTP server, the headers missing a colon (:) are treated as valid headers even though they are not. This may confuse applications into accepting invalid headers.

Affected products

• NetApp ONTAP 9: 9
• 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-pcmh-g36c-qc44
• https://lists.debian.org/debian-lts-announce/2025/03/msg00014.html
• https://security.netapp.com/advisory/ntap-20250523-0009/

Get alerted when CVE-2025-1734 or the next vulnerability affects your stack