modules:
  - module: github.com/matrix-org/gomatrixserverlib
    versions:
      - fixed: 0.0.0-20220815091947-723fd495dde8
    vulnerable_at: 0.0.0-20220812132423-6a49c18a298a
    packages:
      - package: github.com/matrix-org/gomatrixserverlib
        symbols:
          - NewPowerLevelContentFromEvent
        derived_symbols:
          - Allowed
          - Event.PowerLevels
          - EventsLoader.LoadAndVerify
          - HeaderedReverseTopologicalOrdering
          - NewPowerLevelContentFromAuthEvents
          - RequestBackfill
          - ResolveConflicts
          - ResolveStateConflicts
          - ResolveStateConflictsV2
          - RespSendJoin.Check
          - RespState.Check
          - RespState.Events
          - ReverseTopologicalOrdering
          - VerifyAuthRulesAtState
          - VerifyEventAuthChain
description: |
    Power level parsing does not parse the "events_default" key of the
    m.room.power_levels event, setting the event default power level to
    zero in all cases. This can cause events to be improperly accepted or
    rejected in rooms where the event_default power level has been changed.
published: 2022-08-22T18:08:50Z
cves:
  - CVE-2022-36009
ghsas:
  - GHSA-grvv-h2f9-7v9c
references:
  - fix: https://github.com/matrix-org/gomatrixserverlib/commit/723fd495dde835d078b9f2074b6b62c06dea4575