How severe is CVE-2026-75034?

CVE-2026-75034 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-75034 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-75034?

CVE-2026-75034 affects Suse Rancher. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-75034?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-75034 published?

CVE-2026-75034 was published on 2026-09-03 and last updated on 2026-09-18.

CVE-2026-75034

CVE-2026-75034 is a high-severity vulnerability in Suse Rancher with a CVSS 3.x base score of 7.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-294.

Key facts

Severity: High (CVSS 3.x base score 7.4)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-294
Affected product: Suse Rancher
Published: 2026-09-03
Last modified: 2026-09-18

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.

Frequently asked questions

What is CVE-2026-75034?: 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.
How severe is CVE-2026-75034?: CVE-2026-75034 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-75034 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-75034?: CVE-2026-75034 affects Suse Rancher. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-75034?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-75034 published?: CVE-2026-75034 was published on 2026-09-03 and last updated on 2026-09-18.

References

https://github.com/rancher/rancher/releases/tag/v2.15.1

Affected products (1)

cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*

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