CVE•Published 2026-06-01•Modified 2026-06-02•0 articles on news•5 live references•NVD data
CVE-2026-49139
Vulnerability data via NVD (ingested)
CVSS v3.1
—
EPSS percentile
—
Weaknesses (CWE)
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.
Timeline
Published 2026-06-01
Modified 2026-06-02
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-49139Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-49139Censys host search filtered to this CVE id.
grep.app
CVE-2026-49139Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-49139GitHub code search for direct mentions.
Google dork
"CVE-2026-49139" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-49139 on GitHub.
We haven't classified any articles referencing CVE-2026-49139 yet. The external references above still apply.