Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Rancher (github.com/rancher/rancher) versions 2.9.0 to before 2.9.12, 2.10.0 to before 2.10.10, 2.11.0 to before 2.11.6, and 2.12.0 to before 2.12.2 are affected only when SAML authentication is enabled. An attacker can send a crafted SAML login link to a user, and if that user opens it and logs in, the attacker can decrypt the victim's Rancher token. Upgrade to 2.9.12, 2.10.10, 2.11.6, or 2.12.2. If you cannot upgrade, check that the requestId in the URL the Rancher CLI prints matches the URL shown in the browser, and do not log in if they differ.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.0 | High | 3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H | CNA (suse) |
- CISA KEV Not listed.
- EPSS 0.0024, the 15th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:14 UTC First seen by agentprime
- 31 Oct 2026, 14:14 UTC Confirmed by OSV