How severe is CVE-2018-20737?

CVE-2018-20737 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-20737 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20737?

CVE-2018-20737 primarily affects Wso2 Api Manager. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-20737?

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

When was CVE-2018-20737 published?

CVE-2018-20737 was published on 2019-03-21 and last updated on 2026-06-17.

CVE-2018-20737

CVE-2018-20737 is a medium-severity vulnerability in Wso2 Api Manager with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Wso2 Api Manager
Published: 2019-03-21
Last modified: 2026-06-17

Description

An issue was discovered in WSO2 API Manager 2.1.0 and 2.6.0. Reflected XSS exists in the carbon part of the product.

Frequently asked questions

What is CVE-2018-20737?: An issue was discovered in WSO2 API Manager 2.1.0 and 2.6.0. Reflected XSS exists in the carbon part of the product.
How severe is CVE-2018-20737?: CVE-2018-20737 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-20737 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20737?: CVE-2018-20737 primarily affects Wso2 Api Manager. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-20737?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-20737 published?: CVE-2018-20737 was published on 2019-03-21 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:wso2:api_manager:2.6.0:*:*:*:*:*:*:*
cpe:2.3:a:wso2:identity_server:5.7.0:*:*:*:*:*:*:*
cpe:2.3:a:wso2:identity_server_as_key_manager:5.7.0:*:*:*:*:*:*:*

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