CVE-2026-49139 | BDVDB-2026-337145 Detail

Description#

Nanobot prior to version 0.2.1 contains a server-side request forgery vulnerability in the Microsoft Teams channel handler that allows remote attackers to exfiltrate Bot Framework bearer tokens by supplying a forged activity with an attacker-controlled serviceUrl value. Attackers can poison the stored conversation reference by sending a crafted inbound activity to the Teams webhook, causing subsequent bot replies to transmit token-bearing Authorization header requests to an attacker-controlled host.

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.