What is CVE-2020-13883?

CVE-2020-13883 is a medium-severity vulnerability in Wso2 API Manager, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 6.7/10. Published 2020-06-06.

How severe is CVE-2020-13883?

Medium severity. CVSS v3 base score is 6.7 out of 10.

XXE in Wso2 API Manager

CVE-2020-13883

In WSO2 API Manager 3.0.0 and earlier, WSO2 API Microgateway 2.2.0, and WSO2 IS as Key Manager 5.9.0 and earlier, Management Console allows XXE during addition or update of a Lifecycle.

Vulnerability class: XXE (XML External Entity)

Published 2020-06-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (55.8th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

docs.wso2.com/display/Security/Security+Advisory+WSO2-2020-0727 (Vendor Advisory)

Frequently asked questions

What is CVE-2020-13883?: CVE-2020-13883 is a medium-severity vulnerability in Wso2 API Manager, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 6.7/10. Published 2020-06-06.
How severe is CVE-2020-13883?: Medium severity. CVSS v3 base score is 6.7 out of 10.