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CVE-2019-20455

Improper Certificate Validation in Heartland & Global Payments PHP SDK

5.9 MediumFix available

Gateways/Gateway.php in Heartland & Global Payments PHP SDK before 2.0.0 does not enforce SSL certificate validations.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

0.98%Up 0.1 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used5.9

Gateways/Gateway.php in Heartland & Global Payments PHP SDK before 2.0.0 does not enforce SSL certificate validations.

Record
CVE-2019-20455
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:P/I:N/A:N
Weakness
CWE-295
Updated
2026-11-02
CVE ListNo score

Gateways/Gateway.php in Heartland & Global Payments PHP SDK before 2.0.0 does not enforce SSL certificate validations.

Record
CVE-2019-20455
Updated
2026-11-02
EUVDEUVD-2021-2239No score

Gateways/Gateway.php in Heartland & Global Payments PHP SDK before 2.0.0 does not enforce SSL certificate validations.

Record
EUVD-2021-2239
Updated
2026-11-03
GitHub AdvisoriesGHSA-pm77-c4q7-3fwj5.9

Improper Certificate Validation in Heartland & Global Payments PHP SDK

Gateways/Gateway.php in Heartland & Global Payments PHP SDK before 2.0.0 does not enforce SSL certificate validations.

Record
GHSA-pm77-c4q7-3fwj
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-295
Updated
2026-11-02
OSV5.9

Gateways/Gateway.php in Heartland & Global Payments PHP SDK before 2.0.0 does not enforce SSL certificate validations.

Record
CVE-2019-20455
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVGHSA-pm77-c4q7-3fwj5.9

Improper Certificate Validation in Heartland & Global Payments PHP SDK

Gateways/Gateway.php in Heartland & Global Payments PHP SDK before 2.0.0 does not enforce SSL certificate validations.

Record
GHSA-pm77-c4q7-3fwj
CVSS 3.1
5.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-295
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
globalpayments/php-sdk
Packagist
before 2.0.0
2.0.0
globalpayments/php-sdk
Packagist
before 2.0.0, plus listed versions
1.0.01.1.01.1.11.1.21.1.3
Show 8 moreShow less
1.2.01.2.11.2.21.2.31.3.01.3.11.3.21.3.3
2.0.0

History

History
RecordedChangedSources
facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-20455 is a medium vulnerability (CVSS 5.9) in Globalpayments Php Sdk, published February 14, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.98%, the 62nd percentile. Fixed in globalpayments/php-sdk 2.0.0.

References

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