Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Harvester (github.com/harvester/harvester) versions before 1.8.0 are affected. The registration client does not verify the certificate of the remote server by default, so an attacker with network access between Harvester and Rancher Manager could impersonate the remote service and intercept registration traffic, and could also cause a crash of the registration controller by sending oversized response payloads. Upgrade to version 1.8.0 or newer. As a workaround, restrict modification of the cluster-registration-url setting to authorized cluster administrators.
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 |
|---|---|---|---|---|
| 8.6 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H | CNA (suse) |
- CISA KEV Not listed.
- EPSS 0.0021, the 11th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:13 UTC First seen by agentprime
- 31 Oct 2026, 14:13 UTC Confirmed by OSV