A vulnerability has been identified within Rancher Manager in which it did not enforce request body size limits on certain public (unauthenticated) and authenticated API endpoints. This allows a malicious user to exploit this by sending excessively large payloads, which are fully loaded into memory during processing, leading to Denial of Service (DoS).
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| github.com/rancher/rancher(Go) | 2.12.0 | 2.12.1 | N/A |
| github.com/rancher/rancher(Go) | 2.11.0 | 2.11.5 | N/A |
| github.com/rancher/rancher(Go) | 2.10.0 | 2.10.9 | N/A |
| github.com/rancher/rancher(Go) | 2.9.0 | 2.9.11 | N/A |
| github.com/rancher/rancher(Go) | 0 | 0.0.0-20250813072957-aee95d4e2a41 | N/A |
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