How severe is CVE-2019-20455?

CVE-2019-20455 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2019-20455 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-20455?

CVE-2019-20455 affects Globalpayments Php Sdk. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-20455?

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

When was CVE-2019-20455 published?

CVE-2019-20455 was published on 2020-02-14 and last updated on 2026-06-17.

CVE-2019-20455

CVE-2019-20455 is a medium-severity vulnerability in Globalpayments Php Sdk with a CVSS 3.x base score of 5.9. 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Globalpayments Php Sdk
Published: 2020-02-14
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2019-20455?: Gateways/Gateway.php in Heartland & Global Payments PHP SDK before 2.0.0 does not enforce SSL certificate validations.
How severe is CVE-2019-20455?: CVE-2019-20455 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2019-20455 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-20455?: CVE-2019-20455 affects Globalpayments Php Sdk. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-20455?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-20455 published?: CVE-2019-20455 was published on 2020-02-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:globalpayments:php_sdk:*:*:*:*:*:*:*:*

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