CVE-2026-75034: CWE-294 Authentication bypass by capture-replay in SUSE Rancher
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.
CVE-2026-75034: CWE-294 Authentication bypass by capture-replay in SUSE Rancher
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.
CVSS v3.1
Score 7.4high
Affected software
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Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- suse
- Date Reserved
- 2026-08-17T15:22:54.444Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a9990d2acd9273b491c1d63
Added to database: 09/03/2026, 15:22:58 UTC
Last updated: 09/03/2026, 17:26:04 UTC
Views: 4
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