CVE-2026-103592

simple-php-router through 5.4.1.7 contains an IP restriction bypass vulnerability in the IpRestrictAccess middleware that allows remote unauthenticated attackers to bypass IP whitelist and blacklist protections. Attackers can spoof X-Forwarded-For, CF-Connecting-IP, or Client-IP headers to impersonate whitelisted addresses or evade blacklists, gaining access to IP-restricted routes.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/skipperbent/simple-php-router
https://github.com/skipperbent/simple-php-router/blob/5.4.1.7/src/Pecee/Http/Middleware/IpRestrictAccess.php
https://github.com/skipperbent/simple-php-router/blob/5.4.1.7/src/Pecee/Http/Request.php
https://github.com/skipperbent/simple-php-router/issues/727
https://www.vulncheck.com/advisories/simple-php-router-through-5.4.1.7-ip-restriction-bypass-via-forwarding-headers

Configurations

No configuration.

History

30 Sep 2026, 23:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-30 23:16

Updated : 2026-10-06 00:16

NVD link : CVE-2026-103592

Mitre link : CVE-2026-103592

CVE.ORG link : CVE-2026-103592

JSON object : View

Products Affected

No product.

CWE

CWE-348

Use of Less Trusted Source

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