CVE-2018-9090

Name: CVE-2018-9090
Creator: NVD / NIST
Published: 2019-09-24T14:15:11.073+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.79%

Last modified Jun 17, 2026

CVE-2018-9090 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. CoreOS Tectonic 1.7.x and 1.8.x before 1.8.7-tectonic.2 deploys the Grafana web application using default credentials (admin/admin) for the administrator account located at grafana-credentials secret. This occurs because CoreOS does not randomize the administrative password to later be configured by Tectonic administrators. EPSS estimates a 0.79% chance of exploitation in the next 30 days.

Description

CoreOS Tectonic 1.7.x and 1.8.x before 1.8.7-tectonic.2 deploys the Grafana web application using default credentials (admin/admin) for the administrator account located at grafana-credentials secret. This occurs because CoreOS does not randomize the administrative password to later be configured by Tectonic administrators. An attacker can insert an XSS payload into the dashboards.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.79%

51.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Redhat	Tectonic	>= 1.7.1-tectonic.1, < 1.8.7-tectonic.2

References

https://coreos.com/tectonic/releases/Release Notes, Vendor Advisory
https://coreos.com/tectonic/releases/#1.8.7-tectonic.2Release Notes, Vendor Advisory
https://coreos.com/tectonic/releases/Release Notes, Vendor Advisory
https://coreos.com/tectonic/releases/#1.8.7-tectonic.2Release Notes, Vendor Advisory

Timeline

Published: Sep 24, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-9090?

How severe is CVE-2018-9090?

CVE-2018-9090 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.79% probability of exploitation in the next 30 days.

How do I fix CVE-2018-9090?

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-2018-9090?

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

Scan your code now

Source: NVD / NIST