What’s Vulnerable › Vulnerabilities

CVE-2018-1000823

• Severity: critical (CVSS 10.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-12-20 · updated 2026-06-17
• Weakness: CWE-611

Description

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.

Affected products

• Exist-Db Exist: before 5.0.0; 5.0.0-rc1, 5.0.0-rc2, 5.0.0-rc3, 5.0.0-rc4 — fixed in 5.0.0

How to fix

Upgrade to a fixed version: Exist-Db Exist 5.0.0. Check the vendor advisory for mitigations.

References

• https://0dd.zone/2018/10/27/exist-XXE/
• https://github.com/eXist-db/exist/issues/2180
• https://0dd.zone/2018/10/27/exist-XXE/
• https://github.com/eXist-db/exist/issues/2180

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