What is CVE-2019-13031?

CVE-2019-13031 is a high-severity vulnerability in Lemonldap-Ng Lemonldap\, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 8.1/10. Published 2019-06-28.

How severe is CVE-2019-13031?

High severity. CVSS v3 base score is 8.1 out of 10.

XXE in Lemonldap-Ng Lemonldap\

CVE-2019-13031

LemonLDAP::NG before 1.9.20 has an XML External Entity (XXE) issue when submitting a notification to the notification server. By default, the notification server is not enabled and has a "deny all" rule.

Vulnerability class: XXE (XML External Entity)

Published 2019-06-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.024 (83.1th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.024 · change: +0.004

Affected products

Weakness classification (CWE)

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

References

gitlab.ow2.org/lemonldap-ng/lemonldap-ng/issues/1820 (Third Party Advisory, Issue Tracking)
lists.debian.org/debian-lts-announce/2019/07/msg00003.html (mailing-list, Third Party Advisory)
www.calypt.com/blog/index.php/cve-2019-13031-xxe-on-lemonldapng-2-0-5/

Frequently asked questions

What is CVE-2019-13031?: CVE-2019-13031 is a high-severity vulnerability in Lemonldap-Ng Lemonldap\, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 8.1/10. Published 2019-06-28.
How severe is CVE-2019-13031?: High severity. CVSS v3 base score is 8.1 out of 10.