modules:
  - module: github.com/gorilla/handlers
    versions:
      - fixed: 1.3.0
    vulnerable_at: 1.2.1
    packages:
      - package: github.com/gorilla/handlers
        symbols:
          - cors.ServeHTTP
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.
published: 2021-04-14T20:04:52Z
ghsas:
  - GHSA-jcr6-mmjj-pchw
credit: Evan J Johnson
references:
  - fix: https://github.com/gorilla/handlers/pull/116
  - fix: https://github.com/gorilla/handlers/commit/90663712d74cb411cbef281bc1e08c19d1a76145
cve_metadata:
    id: CVE-2017-20146
    cwe: 'CWE 284: Improper Access Control'