What is CVE-2019-3866?

CVE-2019-3866 is a medium-severity vulnerability in [Unknown] Openstack-Mistral, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 5.5/10. Published 2019-11-08.

How severe is CVE-2019-3866?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in [Unknown] Openstack-Mistral

CVE-2019-3866

An information-exposure vulnerability was discovered where openstack-mistral's undercloud log files containing clear-text information were made world readable. A malicious system user could exploit this flaw to access sensitive user information.

Published 2019-11-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (24.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

References

bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2019-3866?: CVE-2019-3866 is a medium-severity vulnerability in [Unknown] Openstack-Mistral, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 5.5/10. Published 2019-11-08.
How severe is CVE-2019-3866?: Medium severity. CVSS v3 base score is 5.5 out of 10.