CVE-2025-1734

Streams HTTP wrapper does not fail for headers with invalid name and no colon

State: Published
Severity: 6.3 Medium
Published: Mar 30, 2025
Updated: Nov 3, 2025
Reserved: Feb 27, 2025

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.

Scores

CVSS	Score	Vector	Source
4.0	6.3 Medium	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	php

Weaknesses

CWE-20 Improper Input Validation

Affected Products

Product	Versions
PHPPHP Group	8.1.* to before 8.1.32Affected 8.2.* to before 8.2.28Affected 8.3.* to before 8.3.19Affected 8.4.* to before 8.4.5Affected

References

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