CVE-2020-26943

Name: CVE-2020-26943
Creator: NVD / NIST
Published: 2020-10-16T06:15:12.527+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.9/10EPSS 3.12%

Last modified Jun 17, 2026

CVE-2020-26943 is a critical-severity vulnerability rated 9.9/10 on the CVSS scale. An issue was discovered in OpenStack blazar-dashboard before 1.3.1, 2.0.0, and 3.0.0. A user allowed to access the Blazar dashboard in Horizon may trigger code execution on the Horizon host as the user the Horizon service runs under (because the Python eval function is used). EPSS estimates a 3.12% chance of exploitation in the next 30 days.

Description

An issue was discovered in OpenStack blazar-dashboard before 1.3.1, 2.0.0, and 3.0.0. A user allowed to access the Blazar dashboard in Horizon may trigger code execution on the Horizon host as the user the Horizon service runs under (because the Python eval function is used). This may result in Horizon host unauthorized access and further compromise of the Horizon service. All setups using the Horizon dashboard with the blazar-dashboard plugin are affected.

Metrics

CVSS 3.1

9.9/10

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

EPSS Probability

3.12%

86.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Openstack	Blazar-Dashboard	< 1.3.1
Openstack	Blazar-Dashboard	2.0.0
Openstack	Blazar-Dashboard	3.0.0

References

http://www.openwall.com/lists/oss-security/2020/10/16/5Third Party Advisory
https://launchpad.net/bugs/1895688Third Party Advisory
https://review.opendev.org/755810Third Party Advisory
https://review.opendev.org/755812Third Party Advisory
https://review.opendev.org/755813Third Party Advisory
https://review.opendev.org/755814Third Party Advisory
https://review.opendev.org/756064Third Party Advisory
https://security.openstack.org/ossa/OSSA-2020-007.htmlThird Party Advisory
http://www.openwall.com/lists/oss-security/2020/10/16/5Third Party Advisory
https://launchpad.net/bugs/1895688Third Party Advisory
https://review.opendev.org/755810Third Party Advisory
https://review.opendev.org/755812Third Party Advisory
https://review.opendev.org/755813Third Party Advisory
https://review.opendev.org/755814Third Party Advisory
https://review.opendev.org/756064Third Party Advisory
https://security.openstack.org/ossa/OSSA-2020-007.htmlThird Party Advisory

Timeline

Published: Oct 16, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-26943?

How severe is CVE-2020-26943?

CVE-2020-26943 has a CVSS score of 9.9/10 (CRITICAL severity). The EPSS model estimates a 3.12% probability of exploitation in the next 30 days.

How do I fix CVE-2020-26943?

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-2020-26943?

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

Scan your code now

Source: NVD / NIST