Vulnerability Report

CVE-2011-5237

Title: Paypal Wps Toolkit Improper Input Validation

Input Validation Error

Proof Of Concept

No public PoC currently indexed for CVE-2011-5237.

CWE Category CWE-20

Published Date Nov 06, 2012

Modified Date Jun 16, 2026

Exploit Status Not Found

Score 5.8 CVSS v2.0

Exploit Probability (EPSS)

0.53%

Vulnerability Summary

CVE-2011-5237: PayPal WPS ToolKit does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

Impacted Vendors

paypal 1

Reference Links

http://www.unrest.ca/peerjacking http://www.unrest.ca/peerjacking

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

5.8

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:M/Au:N/C:P/I:P/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2011-5237 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

June 16, 2026 MODIFIED

Vulnerability data updated via NVD.

April 29, 2026 MODIFIED

Vulnerability data updated via NVD.

April 11, 2025 MODIFIED

Vulnerability data or affected products updated.

November 06, 2012 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


                                    AV:N/AC:M/Au:N/C:P/I:P/A:N

Affected Stack

No specific products linked.