CVE-2012-5789

Name: CVE-2012-5789
Creator: NVD / NIST
Published: 2012-11-04T22:55:03.577+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.57%

Last modified Jun 16, 2026

CVE-2012-5789 is a vulnerability of currently unknown severity. PayPal Payments Standard PHP Library before 20120427 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 intentional disabling of certificate-validation checks through a "FALSE" value.. EPSS estimates a 0.57% chance of exploitation in the next 30 days.

Description

PayPal Payments Standard PHP Library before 20120427 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 intentional disabling of certificate-validation checks through a "FALSE" value.

Metrics

EPSS Probability

0.57%

42.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Paypal	Payments Standard	All versions

References

Timeline

Published: Nov 4, 2012
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2012-5789?

How severe is CVE-2012-5789?

Severity scoring for CVE-2012-5789 is pending analysis. The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.

How do I fix CVE-2012-5789?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2012-5789?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST