How severe is CVE-2011-5238?

CVE-2011-5238 has a CVSS 2.0 base score of 5.8, rated medium severity.

Is CVE-2011-5238 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-5238?

CVE-2011-5238 primarily affects Google Checkout-php. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-5238?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-5238 published?

CVE-2011-5238 was published on 2012-11-06 and last updated on 2026-06-16.

CVE-2011-5238

CVE-2011-5238 is a medium-severity vulnerability in Google Checkout-php with a CVSS 2.0 base score of 5.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.8)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Google Checkout-php
Published: 2012-11-06
Last modified: 2026-06-16

Description

google-checkout-php-sample-code before 1.3.2 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.

Frequently asked questions

What is CVE-2011-5238?: google-checkout-php-sample-code before 1.3.2 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.
How severe is CVE-2011-5238?: CVE-2011-5238 has a CVSS 2.0 base score of 5.8, rated medium severity.
Is CVE-2011-5238 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-5238?: CVE-2011-5238 primarily affects Google Checkout-php. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-5238?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-5238 published?: CVE-2011-5238 was published on 2012-11-06 and last updated on 2026-06-16.

References

Affected products (7)

cpe:2.3:a:google:checkout-php:*:*:*:*:*:*:*:*
cpe:2.3:a:google:checkout-php:1.2:*:*:*:*:*:*:*
cpe:2.3:a:google:checkout-php:1.2:beta:*:*:*:*:*:*
cpe:2.3:a:google:checkout-php:1.2.1:beta:*:*:*:*:*:*
cpe:2.3:a:google:checkout-php:1.2.5:*:*:*:*:*:*:*
cpe:2.3:a:google:checkout-php:1.2.5a:*:*:*:*:*:*:*
cpe:2.3:a:google:checkout-php:1.3.0:*:*:*:*:*:*:*

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