Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Rancher versions 2.5.0 through 2.5.13 and 2.6.0 through 2.6.4 fail to set a Weave password when a cluster is created from an RKE template with Weave as the CNI, so cluster network traffic is sent unencrypted. The source does not describe an attacker requirement beyond being positioned to observe that traffic, which is more feasible when nodes communicate over the Internet. Upgrade to Rancher 2.5.14 or 2.6.5 or later; on affected versions, a manual Weave password can be set on the cluster's Weave DaemonSet, or a new RKE template revision can be created.
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 |
|---|---|---|---|---|
| 6.8 | Medium | 3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N | CNA (suse) |
- CISA KEV Not listed.
- EPSS 0.0039, the 34th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:05 UTC First seen by agentprime
- 31 Oct 2026, 15:05 UTC Confirmed by OSV