CVE-2020-26290
9.3 · CRITICALOverview
CVE-2020-26290 is a critical-severity vulnerability affecting linuxfoundation dex. It was published on December 28, 2020 and has a CVSS 3.1 base score of 9.3 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.3, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Dex is a federated OpenID Connect provider written in Go. In Dex before version 2.27.0 there is a critical set of vulnerabilities which impacts users leveraging the SAML connector. The vulnerabilities enables potential signature bypass due to issues with XML encoding in the underlying Go library. The vulnerabilities have been addressed in version 2.27.0 by using the xml-roundtrip-validator from Mattermost (see related references).
Remediation
Check the references section for vendor advisories and patches from linuxfoundation. Update dex to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| linuxfoundation | dex | >= 0, < 2.27.0 | Affected |
References
Frequently Asked Questions
What is CVE-2020-26290?
CVE-2020-26290 is a critical-severity vulnerability affecting linuxfoundation dex. It was published on December 28, 2020 and has a CVSS 3.1 base score of 9.3 (CRITICAL).
How severe is CVE-2020-26290?
This vulnerability has a CVSS 3.1 base score of 9.3, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2020-26290?
Check the references section for vendor advisories and patches from linuxfoundation. Update dex to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2020-26290?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-26290 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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