CVE-2026-49139

published 2026-06-01

CVE-2026-49139: 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…

Priority P3 43 high 7 CVSS 4.0

AV N AC L AT P PR N UI N VC N VI L VA N SC H SI H SA N E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

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.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
hkuds	nanobot	< 0.2.1	0.2.1

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