CVE-2026-49139: high-severity vulnerability in HKUDS nanobot
Nanobot < 0.2.1 SSRF via Microsoft Teams Channel serviceUrl Poisoning
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7epss 0.4%
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.
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
Affected products
HKUDS · nanobotRelated CVEs — HKUDS nanobot
In the same product, most dangerous first.
CVE-2026-19243MEDIUMHKUDS nanobot Shell Allowlist shell.py ExecTool._spawn os command injectionEPSS 2.3%CVE-2026-2577CRITICALNanobot Unauthenticated WhatsApp Session Hijack via WebSocket BridgeEPSS 0.7%CVE-2026-90809MEDIUMHKUDS nanobot ExecTool shell.py ExecTool._spawn argument injectionEPSS 0.6%CVE-2026-33654HIGHZero-Click Indirect Prompt Injection and Authentication Bypass via Email PollingEPSS 0.5%CVE-2026-19244MEDIUMHKUDS nanobot MCP enabledTools Scope mcp.py connect_mcp_servers access controlEPSS 0.5%CVE-2026-92576CRITICALHKUDS nanobot before 0.3.0 Server-Side Request Forgery via WebFetchToolEPSS 0.4%