medium6.5
CVE-2021-31920
Istio Authorization Bypass Vulnerability
Impact
Istio before 1.8.6 and 1.9.x before 1.9.5 has a remotely exploitable vulnerability where an HTTP request path with multiple slashes or escaped slash characters (%2F or %5C) could potentially bypass an Istio authorization policy when path based authorization rules are used.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | istio.io/istio | < 1.8.6 | 1.8.6 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Istio | Istio | before 1.8.6 from 1.9.0 before 1.9.5 |