5.8CVSSMEDIUM
Description
The PayPal IPN utility 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, related to use of the PHP fsockopen function.
CVSS Vector Breakdown
Exploitability
AV:NAccess VectorNetwork
AC:MAccess ComplexityMedium
Au:NAuthenticationNone
Impact
C:PConfidentialityPartial
I:PIntegrityPartial
A:NAvailabilityNone
Weaknesses
Affected Products
Attack Graph
Products CVE Techniques Tactics
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Exploitability
1 exploit source identified
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View exploit detailsMITRE ATT&CK
1 technique Initial Access
References
Timeline
Published
Nov 4, 2012
Last Updated
Apr 29, 2026
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