CVE-2026-45720

HIGHPre-NVD 7.07.0
EchelonGraph scoreLOW confidence

This high-severity CVE scores 7.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.0%, top 95% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.0Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.0
EG Score
7.0(low)
EG Risk
32(Track)
EG Risk 32/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity70% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

June 5, 2026

Last Modified

September 17, 2026

Advisory Details (7)

Auto-updated Sep 17, 2026
Patch available. Sources: github_pr, github_commit, github_release, github.
github_release Patch Available

v1.7.3

Patch available: siderolabs/omni v1.7.3

https://github.com/siderolabs/omni/releases/tag/v1.7.3
github_release Patch Available

v1.6.6

Patch available: siderolabs/omni v1.6.6

https://github.com/siderolabs/omni/releases/tag/v1.6.6
github_commit

commit ced79da6c032 (siderolabs/omni)

Fix landed in siderolabs/omni commit ced79da6c032 — awaiting tagged release

https://github.com/siderolabs/omni/commit/ced79da6c032d2103803eb53343d0916cc957d2a
github_commit

commit 4c4c1e2d8226 (siderolabs/omni)

Fix landed in siderolabs/omni commit 4c4c1e2d8226 — awaiting tagged release

https://github.com/siderolabs/omni/commit/4c4c1e2d8226914f26774a309a91595f168ee921
github_commit

commit 272d3f4dd00e (siderolabs/omni)

Fix landed in siderolabs/omni commit 272d3f4dd00e — awaiting tagged release

https://github.com/siderolabs/omni/commit/272d3f4dd00e778b39fde09afde35575fe13ef13
github_pr

fix: consume SAML sessions once

Fix merged in siderolabs/omni PR #2816 on 2026-05-11 — awaiting tagged release

https://github.com/siderolabs/omni/pull/2816
github Patch Available

TOCTOU race condition allows multiple concurrent uses of a single-use SAML session token · Advisory · siderolabs/omni · GitHub

https://github.com/siderolabs/omni/security/advisories/GHSA-5x9f-6vg5-qg4m

Vendor Advisories for CVE-2026-45720(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/siderolabs/omni—1.7.3—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 4× in last 7d / 4× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-17 21:22 UTCEG score recompute
  3. 2026-09-17 20:34 UTCEG score recompute
  4. 2026-09-17 20:18 UTCEG score recompute
  5. 2026-07-31 05:14 UTCEG score recompute
  6. 2026-07-26 21:55 UTCEG score recompute
  7. 2026-07-23 03:16 UTCEG score recompute
  8. 2026-06-14 23:18 UTCEPSS rescore
  9. 2026-06-13 23:00 UTCEPSS rescore
  10. 2026-06-12 23:12 UTCEPSS rescore
  11. 2026-06-05 15:57 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-45720?
CVE-2026-45720 is a high vulnerability published on June 5, 2026. 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…
When was CVE-2026-45720 disclosed?
CVE-2026-45720 was first published in the National Vulnerability Database on June 5, 2026, with the most recent update on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45720 actively exploited?
CVE-2026-45720 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.4% of all scored CVEs.
What is the CVSS score of CVE-2026-45720?
CVE-2026-45720 has a CVSS v3 base score of 7.0 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-45720?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45720, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-45720

Explore →

Is Your Infrastructure Affected by CVE-2026-45720?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs