modules:
  - module: github.com/justinas/nosurf
    versions:
      - fixed: 1.1.1
    packages:
      - package: github.com/justinas/nosurf
        symbols:
          - VerifyToken
          - verifyToken
        derived_symbols:
          - CSRFHandler.ServeHTTP
description: |
    Due to improper validation of caller input, validation is silently disabled
    if the provided expected token is malformed, causing any user supplied token
    to be considered valid.
published: 2021-04-14T20:04:52Z
credit: '@aeneasr'
references:
  - fix: https://github.com/justinas/nosurf/pull/60
  - fix: https://github.com/justinas/nosurf/commit/4d86df7a4affa1fa50ab39fb09aac56c3ce9c314
cve_metadata:
    id: CVE-2020-36564
    cwe: 'CWE 345: Insufficient Verification of Data Authenticity'