CVE-2026-49139— Nanobot < 0.2.1 SSRF via Microsoft Teams Channel serviceUrl Poisoning
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I. Basic Information for CVE-2026-49139
Vulnerability Information
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Vulnerability Title
Nanobot < 0.2.1 SSRF via Microsoft Teams Channel serviceUrl Poisoning
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端请求伪造(SSRF)
Source: NVD (National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-49139
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-49139 (1)
Vendor Advisories for CVE-2026-49139 (1)
Proof of Concept for CVE-2026-49139 (1)
Same Patch Batch · HKUDS · 2026-06-01 · 3 CVEs total
| CVE-2026-49138 | 5.0 MEDIUM | Nanobot < 0.2.1 SSRF via web_fetch Tool Redirect Following |
| CVE-2026-49140 | 4.3 MEDIUM | Nanobot < 0.2.1 Denial of Service via Matrix Media Download Handler |
IV. Related Vulnerabilities
Same product: nanobot
- CVE-2026-49140
Nanobot < 0.2.1 Denial of Service via Matrix Media Download - CVE-2026-49138
Nanobot < 0.2.1 SSRF via web_fetch Tool Redirect Following - CVE-2026-35589
nanobot: Cross-Site WebSocket Hijacking in WhatsApp Bridge ( - CVE-2026-33654
Zero-Click Indirect Prompt Injection and Authentication Bypa - CVE-2026-2577
Nanobot Unauthenticated WhatsApp Session Hijack via WebSocke
Same vendor: HKUDS
- CVE-2026-49140
Nanobot < 0.2.1 Denial of Service via Matrix Media Download - CVE-2026-49138
Nanobot < 0.2.1 SSRF via web_fetch Tool Redirect Following - CVE-2026-32847
DeepCode 1.2.0 Path Traversal via SPA Catch-All Route in mai - CVE-2026-7551
HKUDS OpenHarness Remote Command Execution via /bridge Slash - CVE-2026-6823
HKUDS OpenHarness Insecure Default Remote Channel Allowlist
Same weakness: CWE-918
- CVE-2026-10287
SourceCodester SEO Meta Tag Extractor index.php get_headers - CVE-2026-49138
Nanobot < 0.2.1 SSRF via web_fetch Tool Redirect Following - CVE-2026-10280
horizon921 mcpilot MCP API Call Endpoint route.ts server-sid - CVE-2026-10276
hekmon8 Jenkins-server-mcp get_build_status/get_build_log/tr - CVE-2026-10274
indrasishbanerjee aem-mcp-server Axios Request Flow mcp-serv
V. Comments for CVE-2026-49139
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