CVE-2025-1734 Details
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.
A vulnerability exists in PHP versions prior to 8.1.32, prior to 8.2.28, prior to 8.3.19, and prior to 8.4.5. When PHP receives headers from an HTTP server, headers that lack a colon are incorrectly accepted as valid. This flaw can mislead applications into processing these invalid headers as legitimate. Additionally, headers with spaces before the colon are also accepted, contrary to RFC standards. The issue could disrupt how applications parse headers, potentially allowing request smuggling attacks.
Users can upgrade to PHP versions 8.1.32, 8.2.28, 8.3.19, or 8.4.5. For applications that cannot be immediately upgraded, a temporary workaround is to manually handle the `$http_response_header` variable to filter out or correct invalid headers.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 31, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://lists.debian.org/debian-lts-announce/2025/03/msg00014.html | CVE | |
| https://security.netapp.com/advisory/ntap-20250523-0009/ | CVE | Third Party Advisory |
| https://github.com/php/php-src/security/advisories/GHSA-pcmh-g36c-qc44 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-20 | Improper Input Validation | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| php php | >= 8.1.0, < 8.1.32 >= 8.2.0, < 8.2.28 >= 8.3.0, < 8.3.19 >= 8.4.0, < 8.4.5 |
CPE
Remediation
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| netapp ontap | 9 |
CPE
Remediation
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Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Nov 3, 2025 | CVE Modified | CVE |
| Jul 2, 2025 | Initial Analysis | [email protected] |
| May 23, 2025 | CVE Modified | CVE |
| Mar 30, 2025 | New CVE Received | [email protected] |