# CVE-2019-9901: EnvoyProxy Envoy Missing HTTP URL path normalization

Source: https://junglewise.ai/threats/cve-2019-9901-envoyproxy-envoy-missing-http-url-path-normalization  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-05-24  
License: CC BY 4.0 with a link back

CVE-2019-9901 · Severity: low · CVSS 3 · Published 2022-05-24

EnvoyProxy Envoy Missing HTTP URL path normalization

Technologies: [github.com/envoyproxy/envoy (Go)](https://junglewise.ai/threats/technologies/github-com-envoyproxy-envoy). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2019-9901 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2019-9901 being exploited in the wild.

**How severe is CVE-2019-9901?** Low severity, with a CVSS score of 3, published 24 May 2022.

**Which products and versions are affected?** github.com/envoyproxy/envoy (Go) SEMVER:introduced=0,fixed=1.9.1.

**Is there a fix for CVE-2019-9901?** Yes. github.com/envoyproxy/envoy (Go): upgrade to 1.9.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2019-9901?** Check whether you run github.com/envoyproxy/envoy (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/envoyproxy/envoy (Go): upgrade to 1.9.1 or later

  ```sh
  go get github.com/envoyproxy/envoy@v1.9.1
  ```


## Affected products

- github.com/envoyproxy/envoy (Go) SEMVER:introduced=0,fixed=1.9.1

## Identifiers

- CVE-2019-9901
- GHSA-2wmf-p7f8-w42h

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