CVE-2026-44946

SAML Authentication Replay in Rancher

State: Published
Severity: 9.5 Critical
Published: Jun 30, 2026
Updated: Jul 1, 2026
Reserved: May 8, 2026

Description

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,

Scores

CVSS	Score	Vector	Source
4.0	9.5 Critical	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	suse

Weaknesses

CWE-294 Authentication bypass by capture-replay

Affected Products

Product	Versions
RancherSUSE	2.14.0 to before 2.14.3Affected 2.13.0 to before 2.13.7Affected 2.12.0 to before 2.12.11Affected 2.11.0 to before 2.11.15Affected

References

https://github.com/rancher/rancher/security/advisories/GHSA-c5jm-xcmq-9j95vendor-advisory

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