How severe is CVE-2019-20440?

CVE-2019-20440 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-20440 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-20440?

CVE-2019-20440 affects Wso2 Api Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-20440?

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

When was CVE-2019-20440 published?

CVE-2019-20440 was published on 2020-01-28 and last updated on 2026-06-17.

CVE-2019-20440

CVE-2019-20440 is a medium-severity vulnerability in Wso2 Api Manager with a CVSS 3.x base score of 4.8. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Wso2 Api Manager
Published: 2020-01-28
Last modified: 2026-06-17

Description

An issue was discovered in WSO2 API Manager 2.6.0. A potential Reflected Cross-Site Scripting (XSS) vulnerability has been identified in the update API documentation feature of the API Publisher.

Frequently asked questions

What is CVE-2019-20440?: An issue was discovered in WSO2 API Manager 2.6.0. A potential Reflected Cross-Site Scripting (XSS) vulnerability has been identified in the update API documentation feature of the API Publisher.
How severe is CVE-2019-20440?: CVE-2019-20440 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-20440 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-20440?: CVE-2019-20440 affects Wso2 Api Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-20440?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-20440 published?: CVE-2019-20440 was published on 2020-01-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:wso2:api_manager:2.6.0:*:*:*:*:*:*:*

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