Description
A flaw was found in Rancher Manager. The SAML assertion replay protection introduced by the fix for CVE-2026-44946 recorded consumed assertion IDs in a per-process cache, so each replica only detected replays that reached the same pod. In a high-availability deployment, an attacker holding a captured assertion could replay it once against every other replica to obtain additional authenticated sessions as the victim.


This issue affects Rancher: before 2.15.1.
Published: 2026-09-03
Score: 7.4 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 03 Sep 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Suse
Suse rancher
Vendors & Products Suse
Suse rancher

Thu, 03 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Description A flaw was found in Rancher Manager. The SAML assertion replay protection introduced by the fix for CVE-2026-44946 recorded consumed assertion IDs in a per-process cache, so each replica only detected replays that reached the same pod. In a high-availability deployment, an attacker holding a captured assertion could replay it once against every other replica to obtain additional authenticated sessions as the victim. This issue affects Rancher: before 2.15.1.
Title Rancher: SAML Assertion Replay
Weaknesses CWE-294
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: suse

Published:

Updated: 2026-09-03T15:49:32.616Z

Reserved: 2026-08-17T15:22:54.444Z

Link: CVE-2026-75034

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-03T16:18:22.343

Modified: 2026-09-03T16:25:43.557

Link: CVE-2026-75034

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-03T17:00:06Z

Weaknesses
  • CWE-294

    Authentication Bypass by Capture-replay