packages:
  - module: github.com/prometheus/client_golang
    package: github.com/prometheus/client_golang/prometheus/promhttp
    symbols:
      - sanitizeMethod
    derived_symbols:
      - Handler
      - HandlerFor
      - InstrumentHandlerCounter
      - InstrumentHandlerDuration
      - InstrumentHandlerRequestSize
      - InstrumentHandlerResponseSize
      - InstrumentHandlerTimeToWriteHeader
      - InstrumentMetricHandler
      - InstrumentRoundTripperCounter
      - InstrumentRoundTripperDuration
      - flusherDelegator.Flush
      - init
      - readerFromDelegator.ReadFrom
      - responseWriterDelegator.Write
      - responseWriterDelegator.WriteHeader
    versions:
      - fixed: 1.11.1
    vulnerable_at: 1.11.0
description: |
    The Prometheus client_golang HTTP server is vulnerable to a denial of
    service attack when handling requests with non-standard HTTP methods.

    In order to be affected, an instrumented software must use any of
    the promhttp.InstrumentHandler* middleware except `RequestsInFlight`;
    not filter any specific methods (e.g GET) before middleware;
    pass a metric with a "method" label name to a middleware; and not
    have any firewall/LB/proxy that filters away requests with unknown
    "method".
cves:
  - CVE-2022-21698
ghsas:
  - GHSA-cg3q-j54f-5p7p