Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Rancher versions 2.7.0 up to 2.8.9 and 2.9.0 up to 2.9.3 store vSphere CPI and CSI credentials in plaintext objects, exposing them to cluster members and to users with privileged host access on downstream clusters. An attacker who is a cluster member or has host access can read the vSphere passwords. Upgrade to Rancher 2.8.9 or 2.9.3, then run the migration script from the support-tools repository, and change the vSphere credentials if they may have been exposed; Rancher 2.7 receives no backport fix.
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 |
|---|---|---|---|---|
| 8.5 | High | 4.0 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L | CNA (suse) |
- CISA KEV Not listed.
- EPSS 0.0044, the 38th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:15 UTC First seen by agentprime
- 31 Oct 2026, 14:15 UTC Confirmed by OSV