Home/CVE/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 recei
CVE

CVE-2025-1734

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 recei

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.

MEDIUM · CVSS 5.3 EPSS 0.00757
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

5
php>= 8.1.0 and < 8.1.32
php>= 8.2.0 and < 8.2.28
php>= 8.3.0 and < 8.3.19
php>= 8.4.0 and < 8.4.5
netapp ontapall versions
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · security@php.net
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD30 Mar 2025 · 06:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

15
rhsaRHSA-2026:2470Low
usnUSN-7645-1
rhsaRHSA-2025:7418Important
rhsaRHSA-2025:7489Important
msrcCVE-2025-1734
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/php/php-src/security/advisories/GHSA-pcmh-g36c-qc44Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/03/msg00014.html
https://security.netapp.com/advisory/ntap-20250523-0009/Third Party Advisory
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