What is CVE-2020-24590?

CVE-2020-24590 is a critical-severity vulnerability in Wso2 API Manager, classified under Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion). CVSS score: 9.1/10. Published 2020-08-21.

How severe is CVE-2020-24590?

Critical severity. CVSS v3 base score is 9.1 out of 10.

XXE in Wso2 API Manager

CVE-2020-24590

The Management Console in WSO2 API Manager through 3.1.0 and API Microgateway 2.2.0 allows XML Entity Expansion attacks.

Published 2020-08-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.013 (69.1th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Wso2 API Manager
Wso2 API Microgateway — versions 2.2.0

Weakness classification (CWE)

CWE-776 — Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion)

References

docs.wso2.com/display/Security/Security+Advisory+WSO2-2020-0742 (Vendor Advisory)

Frequently asked questions

What is CVE-2020-24590?: CVE-2020-24590 is a critical-severity vulnerability in Wso2 API Manager, classified under Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion). CVSS score: 9.1/10. Published 2020-08-21.
How severe is CVE-2020-24590?: Critical severity. CVSS v3 base score is 9.1 out of 10.