#VU105644 Input validation error in PHP - CVE-2025-1217

Vulnerability identifier: #VU105644

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-1217

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PHP
Universal components / Libraries / Scripting languages

Vendor: PHP Group

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to Header parser of HTTP Stream wrapper does not handle folded headers. A remote attacker can perform spoofing attack by manipulating HTTP headers.

Mitigation
Install update from vendor's website.

Vulnerable software versions

PHP: 8.1.0 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.17, 8.4.1 - 8.4.4

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External links
https://www.php.net/archive/2025.php#2025-03-13
https://github.com/php/php-src/security/advisories/GHSA-v8xr-gpvj-cx9g

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.