Capgo – Unauthenticated Channel Enumeration and App Oracle via GET /channel_self_CVE-2026-56323

{
    "lastseen": "",
    "description": "Capgo before 12.128.2 contains an information disclosure vulnerability in the /functions/v1/channel_self endpoint that allows unauthenticated attackers to enumerate non-public channel names and determine app existence and subscription status. Remote attackers can send GET requests with arbitrary app_id parameters to disclose internal rollout channels, enumerate valid applications across tenants, and leak billing status without authentication or device binding.",
    "published": "2026-06-22T21:04:49.612Z",
    "modified": "2026-06-22T21:04:49.612Z",
    "type": "cve",
    "title": "Capgo - Unauthenticated Channel Enumeration and App Oracle via GET /channel_self",
    "source": "VulnCheck",
    "references": "https://github.com/Cap-go/capgo/security/advisories/GHSA-469v-6vw5-hxpq\nhttps://www.vulncheck.com/advisories/capgo-unauthenticated-channel-enumeration-and-app-oracle-via-get-channel-self",
    "id": "CVE-2026-56323",
    "bulletinFamily": "",
    "cwe": [
        "CWE-200"
    ],
    "cvelist": null,
    "sourceData": "Capgo Capgo 0",
    "sourceHref": "",
    "cvss": {
        "score": 8.7,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/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": "Capgo",
    "version": "0",
    "vendor": "Capgo",
    "ai_description": "Unauthenticated information disclosure vulnerability in Capgo's /functions/v1/channel_self endpoint",
    "ai_severity": "High",
    "ai_vendor": "Capgo",
    "ai_product": "Capgo",
    "ai_version": "before 12.128.2",
    "ai_score": 8.7
}