Nanobot < 0.2.1 SSRF via Microsoft Teams Channel serviceUrl Poisoning_CVE-2026-49139

{
    "lastseen": "",
    "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.",
    "published": "2026-06-01T19:50:42.993Z",
    "modified": "2026-06-01T19:50:42.993Z",
    "type": "cve",
    "title": "Nanobot < 0.2.1 SSRF via Microsoft Teams Channel serviceUrl Poisoning",
    "source": "VulnCheck",
    "references": "https://github.com/HKUDS/nanobot/releases/tag/v0.2.1\nhttps://github.com/HKUDS/nanobot/pull/4047\nhttps://github.com/HKUDS/nanobot/commit/232df45126bcf0f8fccd123d73714f202c8e8612\nhttps://www.vulncheck.com/advisories/nanobot-ssrf-via-microsoft-teams-channel-serviceurl-poisoning",
    "id": "CVE-2026-49139",
    "bulletinFamily": "",
    "cwe": [
        "CWE-918"
    ],
    "cvelist": null,
    "sourceData": "HKUDS nanobot 0",
    "sourceHref": "",
    "cvss": {
        "score": 7,
        "severity": "HIGH",
        "vector": "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",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "nanobot",
    "version": "0",
    "vendor": "HKUDS",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}