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.

Published: 2012-11-06 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-5238 is rated Low Risk (33.8/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.38%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-5238

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.08% 0.38% +0.30%
2 2023-03-07 0.89% 0.08% -0.80%
3 2022-02-04 — 0.89% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-5238

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 4.9 [email protected]

Weakness enumeration for CVE-2011-5238

Affected software / configurations for CVE-2011-5238

Vendor Product Version Raw CPE
google checkout-php <= 1.3.1 cpe:2.3:a:google:checkout-php:*:*:*:*:*:*:*:*
google checkout-php 1.2 cpe:2.3:a:google:checkout-php:1.2:*:*:*:*:*:*:*
google checkout-php 1.2 cpe:2.3:a:google:checkout-php:1.2:beta:*:*:*:*:*:*
google checkout-php 1.2.1 cpe:2.3:a:google:checkout-php:1.2.1:beta:*:*:*:*:*:*
google checkout-php 1.2.5 cpe:2.3:a:google:checkout-php:1.2.5:*:*:*:*:*:*:*
google checkout-php 1.2.5a cpe:2.3:a:google:checkout-php:1.2.5a:*:*:*:*:*:*:*
google checkout-php 1.3.0 cpe:2.3:a:google:checkout-php:1.3.0:*:*:*:*:*:*:*

References for CVE-2011-5238

cvelogic Threat Intelligence