CVE-2026-49140 | BDVDB-2026-337146 Detail

Description#

Nanobot prior to version 0.2.1 contains a denial of service vulnerability in the Matrix channel media download handler that allows authenticated room members to exhaust process memory and bandwidth by sending media events with missing or invalid size metadata. Attackers can send multiple concurrent Matrix media events with omitted or invalid declared sizes to trigger simultaneous large media downloads that fully materialize response bodies before post-download rejection, consuming process resources until service degradation occurs.

Impact#

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Exploit#

History#

1. Version 12026-06-01Record published in the CVE List.
2. Version 22026-11-08Most recent update recorded in the CVE List.