{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-49139","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-05-27T17:40:12.738Z","datePublished":"2026-06-01T19:50:42.993Z","dateUpdated":"2026-11-08T14:04:48.173Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-08T14:04:48.173Z"},"datePublic":"2026-05-28T00:00:00.000Z","title":"Nanobot < 0.2.1 SSRF via Microsoft Teams Channel serviceUrl Poisoning","descriptions":[{"lang":"en","value":"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."}],"tags":["x_open-source"],"problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-918","description":"Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"affected":[{"defaultStatus":"affected","packageURL":"pkg:github/HKUDS/nanobot","vendor":"HKUDS","product":"nanobot","repo":"https://github.com/HKUDS/nanobot","versions":[{"status":"affected","version":"0","versionType":"semver","lessThan":"0.2.1"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:nanobot:nanobot:*:*:*:*:*:python:*:*","versionEndExcluding":"0.2.1"}]}]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"HIGH","vulnIntegrityImpact":"LOW","subIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"HIGH","baseScore":7,"vectorString":"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"}}],"references":[{"url":"https://github.com/HKUDS/nanobot/releases/tag/v0.2.1","name":"nanobot 0.2.1 Release Notes","tags":["release-notes"]},{"url":"https://github.com/HKUDS/nanobot/pull/4047","tags":["issue-tracking","patch"]},{"url":"https://github.com/HKUDS/nanobot/commit/232df45126bcf0f8fccd123d73714f202c8e8612","tags":["patch"]},{"url":"https://www.vulncheck.com/advisories/nanobot-ssrf-via-microsoft-teams-channel-serviceurl-poisoning","tags":["third-party-advisory"]}],"credits":[{"lang":"en","value":"Chia Min Jun Lennon","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"vulncheck"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-02T15:27:12.755532Z","id":"CVE-2026-49139","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-02T15:46:15.707Z"}}]}}