What is CVE-2018-1000837?

CVE-2018-1000837 is a critical-severity vulnerability in Obeo Uml Designer, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 10.0/10. Published 2018-12-20.

How severe is CVE-2018-1000837?

Critical severity. CVSS v3 base score is 10.0 out of 10.

XXE in Obeo Uml Designer

CVE-2018-1000837

UML Designer version <= 8.0.0 contains a XML External Entity (XXE) vulnerability in XML parser for plugins that can result in Disclosure of confidential data, denial of service, SSRF, port scanning. This attack appear to be exploitable via malicious plugins.xml file.

Vulnerability class: XXE (XML External Entity)

Published 2018-12-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.018 (77.6th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

Obeo Uml Designer

Weakness classification (CWE)

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

References

0dd.zone/2018/10/28/uml-designer-XXE/ (Third Party Advisory, Issue Tracking)
github.com/ObeoNetwork/UML-Designer/issues/1035 (Third Party Advisory)

Frequently asked questions

What is CVE-2018-1000837?: CVE-2018-1000837 is a critical-severity vulnerability in Obeo Uml Designer, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 10.0/10. Published 2018-12-20.
How severe is CVE-2018-1000837?: Critical severity. CVSS v3 base score is 10.0 out of 10.