cvedb.io
CVE-2021-39156
HIGH · CVSS 8.1
EPSS exploitation probability: 0%
Published 2021-08-24T23:15:10.413 · Last modified 2026-06-17T04:03:12.743

Summary

Istio is an open source platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data. Istio 1.11.0, 1.10.3 and below, and 1.9.7 and below contain a remotely exploitable vulnerability where an HTTP request with `#fragment` in the path may bypass Istio’s URI path based authorization policies. Patches are available in Istio 1.11.1, Istio 1.10.4 and Istio 1.9.8. As a work around a Lua filter may be written to normalize the path.

Affected products

istio — istio

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.