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TI-2026-52725 Aliases CVE-2026-75034

Rancher: SAML Assertion Replay

Priority LOW 34CWE-294Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-294.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00323 25th percentileScored 2026-11-07
Fix Fixed Rancher (SUSE): 2.15.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SUSERancherbefore 2.15.12.15.1Patch availableCNA
  • Rancher VendorSUSE Affected before 2.15.1 Fixed in 2.15.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*before 2.15.1VulnerableSUSE
  • cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:* Versions before 2.15.1 Vulnerable ·SUSE

Remediation

  • Fix · CNA Rancher (SUSE) Fixed in 2.15.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    SUSE Rancher 2.15.1

    5 records Highest priority Priority MEDIUM 1 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2026-50041 Rancher: Ownership-less ClusterRole overwrite via attacker-controlled cr-name annotation on GlobalRolePriority MEDIUM 40
    • TI-2026-52724 Rancher: Cross-Cluster Secret Leakage via Namespace projectId Annotation SpoofingPriority LOW 34
    • TI-2026-52726 Rancher: ext.cattle.io/v1 Token store: cross-user token disclosure via label-selector scoping bypassPriority LOW 31
    Show all 5 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-75034
  2. 2026-11-03 CISA SSVC decision points changed

References

Other 1

  • TI-2021-14903 Rancher: Plaintext storage and exposure of credentials in Rancher API and cluster.management.cattle.io object CVSS 3.1CRITICAL 9.9
  • TI-2022-21489 Rancher: Non-random authentication token CVSS 3.1CRITICAL 9.8
  • TI-2019-08380 An issue was discovered that affects the following versions of Rancher: v2.0.0 through… CVSS 3.0CRITICAL 9.8
  • TI-2023-08827 Improper privilege management in SUSE Rancher CVSS 3.1CRITICAL 9.9
  • TI-2023-08823 Improper privilege management in SUSE Rancher CVSS 3.1CRITICAL 9.9
  • TI-2022-21491 Rancher: Exposure of sensitive fields CVSS 3.1CRITICAL 9.9
See all 35 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences