CVE-2020-10990Network attack vector

File disclosure via enabled external entity resolution

Published Mar 26, 2020 · Updated Aug 4, 2024

XML external entity injection in Accenture Mercury before 1.12.28 allows remote attackers to read files through crafted XML input. SimpleXmlParser creates a DocumentBuilderFactory with entity and external DTD processing enabled, then parses untrusted XML without restricting those features. Exploitation requires a consuming service to pass remote XML to the parser; resolved entities expose files readable by the service account or initiate server-side requests.

CVSS severity9.8
Critical
EPSS probability1.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XML external entity injection in Accenture Mercury before 1.12.28 allows remote attackers to read files through crafted XML input. SimpleXmlParser creates a DocumentBuilderFactory with entity and external DTD processing enabled, then parses untrusted XML without restricting those features. Exploitation requires a consuming service to pass remote XML to the parser; resolved entities expose files readable by the service account or initiate server-side requests.

The record

CVE
CVE-2020-10990
Published
Mar 26, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-611, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 26, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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