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CVE-2018-1000823

CRITICAL

exist version <= 5.0.0-RC4 contains a XML External Entity (XXE) vulnerability in XML Parser for REST Server that can result in Disclosure of confidential data, denial of service, SSRF, port scanning.

Published: Dec 20, 2018 Modified: Jun 17, 2026
CWE-611

CVSS Metrics

CVSSv3
Attack Vector: NETWORK Attack Complexity: LOW Privileges Required: NONE User Interaction: NONE Scope: CHANGED Confidentiality Impact: HIGH Integrity Impact: HIGH Availability Impact: HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected Products (5)

Vendor Product Version
exist-db exist * < 5.0.0
exist-db exist 5.0.0
exist-db exist 5.0.0
exist-db exist 5.0.0
exist-db exist 5.0.0

GitHub Security Advisory GHSA-jxm5-5xcw-h57q

exist-db:exist-core XML External Entity (XXE) vulnerability

maven org.exist-db:exist-core < 5.1.0 Fixed: 5.1.0

References (4)

Risk Scores

CVSS Score 10.0 / 10
EPSS Score 1.88%

Top 22% most likely to be exploited

Threat Score 40.6 / 100

Data Sources

NVD EPSS GitHub