CVE-2025-1736: php Input Validation Flaw — Fix

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 user-supplied headers are sent, the insufficient validation of the end-of-line characters may prevent certain headers from being sent or lead to certain headers be misinterpreted.

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CVSS v3.1 Score

7.3

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Weakness Type (CWE)

CWE-20 Improper Input Validation

Affected Products

Vendor	Product	Versions
php	php	8.1.0 — 8.1.32
php	php	8.2.0 — 8.2.28
php	php	8.3.0 — 8.3.19
php	php	8.4.0 — 8.4.5
netapp	ontap	All

References

Advisories & Patches

https://github.com/php/php-src/security/advisories/GHSA-hgf5-96fm-v528

Other References

https://lists.debian.org/debian-lts-announce/2025/03/msg00014.html https://security.netapp.com/advisory/ntap-20250523-0006/

Frequently Asked Questions

What is CVE-2025-1736? +

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 user-supplied headers are sent, the insufficient validation of the end-of-line characters may prevent certain headers from being sent or lead to certain headers be misinterpreted. It has a CVSS v3.1 base score of 7.3 (HIGH).

How severe is CVE-2025-1736? +

CVE-2025-1736 has a CVSS v3.1 score of 7.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-1736? +

CVE-2025-1736 affects products from netapp, php, specifically: ontap, php. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-1736? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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