What is CVE-2020-10990?

CVE-2020-10990 is a critical-severity vulnerability in Accenture Mercury, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.8/10. Published 2020-03-27.

How severe is CVE-2020-10990?

Critical severity. CVSS v3 base score is 9.8 out of 10.

XXE in Accenture Mercury

CVE-2020-10990

An XXE issue exists in Accenture Mercury before 1.12.28 because of the platformlambda/core/serializers/SimpleXmlParser.java component.

Vulnerability class: XXE (XML External Entity)

Published 2020-03-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.012 (66.5th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Accenture Mercury

Weakness classification (CWE)

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

References

github.com/Accenture/mercury/issues/13 (Third Party Advisory)
github.com/Accenture/mercury/commit/f647a01347485d2afe3a0b735eab3d0121d61f46 (Patch)

Frequently asked questions

What is CVE-2020-10990?: CVE-2020-10990 is a critical-severity vulnerability in Accenture Mercury, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.8/10. Published 2020-03-27.
How severe is CVE-2020-10990?: Critical severity. CVSS v3 base score is 9.8 out of 10.