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CVE-2026-45720

7.0 · HIGH

Omni manages Kubernetes on bare metal, virtual machines, or in a cloud.

Published Sep 17, 2026CWE-294EPSS 0.14%

Overview

CVE-2026-45720 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 7.0 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Omni manages Kubernetes on bare metal, virtual machines, or in a cloud. Prior to 1.6.6 and from 1.7.0 until 1.7.3, SAML.getSession in internal/pkg/auth/interceptor/saml.go checks SAMLAssertion.Used and marks it used in separate state operations. Concurrent requests carrying the same captured saml-session token can each observe the assertion as unused and obtain authentication as the victim before either update is visible. The attacker can invoke SAML-protected gRPC endpoints, use ConfirmPublicKey to create multiple persistent credentials tied to the victim, and generate audit entries attributed to the victim, with the resulting access potentially affecting confidentiality, integrity, and availability according to the victim's privileges. This issue is fixed in versions 1.6.6 and 1.7.3.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

GitHubgithub.com/siderolabs/omni/commit/272d3f4dd00e778b39fde09afde35575fe13ef13GitHubgithub.com/siderolabs/omni/commit/4c4c1e2d8226914f26774a309a91595f168ee921GitHubgithub.com/siderolabs/omni/commit/ced79da6c032d2103803eb53343d0916cc957d2aGitHubgithub.com/siderolabs/omni/pull/2816GitHubgithub.com/siderolabs/omni/releases/tag/v1.6.6GitHubgithub.com/siderolabs/omni/releases/tag/v1.7.3GitHubgithub.com/siderolabs/omni/security/advisories/GHSA-5x9f-6vg5-qg4m

How CyberStrike helps

Frequently asked questions

What is CVE-2026-45720?

CVE-2026-45720 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 7.0 (HIGH).

How severe is CVE-2026-45720?

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-45720?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2026-45720?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-45720 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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