CVE-2018-16848

Name: CVE-2018-16848
Creator: NVD / NIST
Published: 2020-06-15T15:15:09.427+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.18%

Last modified Jun 17, 2026

CVE-2018-16848 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A Denial of Service (DoS) condition is possible in OpenStack Mistral in versions up to and including 7.0.3. Submitting a specially crafted workflow definition YAML file containing nested anchors can lead to resource exhaustion culminating in a denial of service.. EPSS estimates a 1.18% chance of exploitation in the next 30 days.

Description

A Denial of Service (DoS) condition is possible in OpenStack Mistral in versions up to and including 7.0.3. Submitting a specially crafted workflow definition YAML file containing nested anchors can lead to resource exhaustion culminating in a denial of service.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.18%

63.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions
Redhat	Openstack-Mistral	<= 7.0.3

References

https://bugs.launchpad.net/mistral/+bug/1785657Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1645332Issue Tracking, Vendor Advisory
https://bugs.launchpad.net/mistral/+bug/1785657Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1645332Issue Tracking, Vendor Advisory

Timeline

Published: Jun 15, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-16848?

How severe is CVE-2018-16848?

CVE-2018-16848 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.18% probability of exploitation in the next 30 days.

How do I fix CVE-2018-16848?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-16848?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST