# CVE-2017-20146: golang-github-gorilla-handlers: Usage of the CORS handler may apply improper CORS headers, allowing the requester to explicitly control the value of...

CVE-2017-20146 is fixed in golang-github-gorilla-handlers on 1 platform, first by DEBIAN-CVE-2017-20146, released December 27, 2022. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2017-20146
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0077
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 27, 2022

## Description

Usage of the CORS handler may apply improper CORS headers, allowing the requester to explicitly control the value of the Access-Control-Allow-Origin header, which bypasses the expected behavior of the Same Origin Policy.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | golang-github-gorilla-handlers Debian 12.15 (bookworm) | 1.3.0-1 | [DEBIAN-CVE-2017-20146](https://patchblox.com/security/data/fix/linux/debian-cve-2017-20146.md) | Dec 27, 2022 |
| Linux | golang-github-gorilla-handlers Debian 13.5 (trixie) | 1.3.0-1 | [DEBIAN-CVE-2017-20146](https://patchblox.com/security/data/fix/linux/debian-cve-2017-20146.md) | Dec 27, 2022 |
| Linux | golang-github-gorilla-handlers Debian 14 | 1.3.0-1 | [DEBIAN-CVE-2017-20146](https://patchblox.com/security/data/fix/linux/debian-cve-2017-20146.md) | Dec 27, 2022 |

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Data as of 2026-11-07T06:34:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo