CVE-2026-45720
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/siderolabs/omniGo | < 1.6.6 | 1.6.6 |
github.com/siderolabs/omniGo | >= 1.7.0, < 1.7.3 | 1.7.3 |
Affected products
3- ghsa-coords2 versionspkg:golang/github.com/siderolabs/omnipkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2016.0
< 1.6.6+ 1 more
- (no CPE)range: < 1.6.6
- (no CPE)range: < 0.0.20260723T184607-160000.1.1
Patches
Vulnerability mechanics
References
8- github.com/advisories/GHSA-5x9f-6vg5-qg4mghsaADVISORY
- github.com/siderolabs/omni/releases/tag/v1.6.6nvdWEB
- github.com/siderolabs/omni/releases/tag/v1.7.3nvdWEB
- github.com/siderolabs/omni/security/advisories/GHSA-5x9f-6vg5-qg4mnvdWEB
- github.com/siderolabs/omni/commit/272d3f4dd00e778b39fde09afde35575fe13ef13nvd
- github.com/siderolabs/omni/commit/4c4c1e2d8226914f26774a309a91595f168ee921nvd
- github.com/siderolabs/omni/commit/ced79da6c032d2103803eb53343d0916cc957d2anvd
- github.com/siderolabs/omni/pull/2816nvd
News mentions
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