CVE-2026-63406
AnyCable is a realtime server for reliable two-way communication that supports any backend. Prior to 1.6.15, the telemetry subsystem in telemetry/config.go enables tracking with a hardcoded public authToken, while clusterFingerprint in telemetry/telemetry.go reads the full configuration file and raw os.Args returned by anycableCLIArgs, including values supplied through --secret, --jwt_secret, and --http_rpc_secret. These inputs are passed to generateDigest, where sha256.New produces the hexadecimal fingerprint that is sent as telemetry.
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The available source therefore does not show raw credentials leaving the process or establish the advisory's claimed confidentiality loss, although the stable fingerprint is derived from secret-bearing configuration and the default telemetry client uses publicly known authentication material. This issue is fixed in version 1.6.15.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- Puntuación base: 5.9
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.30%
- Percentil entre todas las CVEs puntuadas: 21
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1190Exploit Public-Facing Applicationinitial access45 % - Impacto principal
T1552.001Credentials In Filescredential access70 % - Impacto secundario
T1078.001Default Accountsstealth · persistence · privilege escalation · initial access35 %
AnyCable expone telemetría con authToken público (AV:N) permitiendo lectura de configuración con secretos; el hash derivado de credenciales es predecible con fingerprint estable.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-312, CWE-798
Referencias
JSON original (NVD)
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{
"id": "CVE-2026-63406",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-63406",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-09-18T17:02:25.322916Z"
}
}
],
"cvssMetricV31": [
{
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"source": "security-advisories@github.com",
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"version": "3.1",
"baseScore": 5.9,
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"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "HIGH",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 3.6,
"exploitabilityScore": 2.2
}
]
},
"affected": [
{
"source": "security-advisories@github.com",
"affectedData": [
{
"vendor": "anycable",
"product": "anycable",
"versions": [
{
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],
"published": "2026-09-18T17:16:59.620",
"references": [
{
"url": "https://github.com/anycable/anycable/commit/201c67e99e463ed63bd6b345562f4c458385fcee",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/anycable/anycable/releases/tag/v1.6.15",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/anycable/anycable/security/advisories/GHSA-w72w-9qmj-c9qm",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/anycable/anycable/security/advisories/GHSA-w72w-9qmj-c9qm",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
}
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"source": "security-advisories@github.com",
"description": [
{
"lang": "en",
"value": "CWE-312"
},
{
"lang": "en",
"value": "CWE-798"
}
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}
],
"descriptions": [
{
"lang": "en",
"value": "AnyCable is a realtime server for reliable two-way communication that supports any backend. Prior to 1.6.15, the telemetry subsystem in telemetry/config.go enables tracking with a hardcoded public authToken, while clusterFingerprint in telemetry/telemetry.go reads the full configuration file and raw os.Args returned by anycableCLIArgs, including values supplied through --secret, --jwt_secret, and --http_rpc_secret. These inputs are passed to generateDigest, where sha256.New produces the hexadecimal fingerprint that is sent as telemetry. The available source therefore does not show raw credentials leaving the process or establish the advisory's claimed confidentiality loss, although the stable fingerprint is derived from secret-bearing configuration and the default telemetry client uses publicly known authentication material. This issue is fixed in version 1.6.15."
}
],
"lastModified": "2026-09-24T21:25:27.050",
"sourceIdentifier": "security-advisories@github.com"
}