Cyber Resilience

CVE-2026-44946

Critical

Published: 30 June 2026

Published
30 June 2026
Modified
02 July 2026
KEV Added
—
Patch
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CVSS Score v4 9.5 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0029 20.9th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-44946 is a critical-severity Authentication Bypass by Capture-replay (CWE-294) vulnerability in Suse Rancher. Its CVSS base score is 9.5 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Adversary-in-the-Middle (T1557); ranked at the 20.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A07:2025 Authentication Failures

EU & UK References

Vulnerability details

A SAML authentication replay vulnerability in Rancher's Assertion Consumer Service (ACS) handler did not enforce one-time use of SAML assertion, potentially allowing person in the middle attacks against Rancher, affecting Rancher 2.14.0 before 2.14.3,

CWE(s)
CWE-294

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1557 Adversary-in-the-Middle Credential Access
Adversaries may attempt to position themselves between two or more networked devices using an adversary-in-the-middle (AiTM) technique to support follow-on behaviors such as [Network Sniffing](https://attack.
attack.mitre.org →
Why these techniques?

SAML assertion replay directly enables capture-replay MitM (CWE-294) matching T1557.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-7168Shared CWE-294
CVE-2024-39081Shared CWE-294
CVE-2026-30080Shared CWE-294
CVE-2023-31761Shared CWE-294
CVE-2025-54810Shared CWE-294
CVE-2020-27374Shared CWE-294
CVE-2022-44457Shared CWE-294
CVE-2022-37418Shared CWE-294
CVE-2022-30467Shared CWE-294
CVE-2021-39364Shared CWE-294

Affected Assets

suse
rancher
2.11.0 — 2.11.15 · 2.12.0 — 2.12.11 · 2.13.0 — 2.13.7

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

AC-9 Previous Logon Notification
addresses: CWE-294

Allows detection of capture-replay attacks by showing the replayed logon's timestamp as the last logon.

SC-23 Session Authenticity
addresses: CWE-294

Protects against replay of captured session tokens or credentials by requiring authenticated, fresh session channels.

SC-40 Wireless Link Protection
addresses: CWE-294

Wireless link protections commonly incorporate replay protection, reducing the exploitability of capture-replay weaknesses.

SC-45 System Time Synchronization
addresses: CWE-294

Accurate synchronized time enables tight timestamp windows that directly limit capture-replay windows in authentication protocols.

References