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Diffstat (limited to '')
| -rw-r--r-- | synapse/handlers/device.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/synapse/handlers/device.py b/synapse/handlers/device.py index 1d6d1f8a92..e59937fd75 100644 --- a/synapse/handlers/device.py +++ b/synapse/handlers/device.py @@ -763,6 +763,10 @@ class DeviceListUpdater: device_id = edu_content.pop("device_id") stream_id = str(edu_content.pop("stream_id")) # They may come as ints prev_ids = edu_content.pop("prev_id", []) + if not isinstance(prev_ids, list): + raise SynapseError( + 400, "Device list update had an invalid 'prev_ids' field" + ) prev_ids = [str(p) for p in prev_ids] # They may come as ints if get_domain_from_id(user_id) != origin: |