PatchTheCVECVE-2026-75034: A flaw was found in Rancher Manager
CVE-2026-75034 is a high-severity flaw (CVSS 7.4) affecting rancher. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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:
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.4 (High) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 75%) |
| CISA exploited list | No |
| Weakness | CWE-294 |
| Published | 2026-09-03 |
| Last modified | 2026-09-18 |
Last updated 2026-09-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-75034?
rancher: upgrade to 2.15.1. Exact commands for each OS are on this page.
Is CVE-2026-75034 being exploited?
CVE-2026-75034 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-75034 affect?
CVE-2026-75034 affects rancher. Severity is high (CVSS 7.4). 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
How urgent is CVE-2026-75034?
Priority 37/100. High severity; Remotely exploitable, no login, no user action
Software pages
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