CVE-2026-108729
Corteza hasta la versión 2024.9.10 contiene una vulnerabilidad de autorización incorrecta en los puntos finales de adjuntos de composición que permite a atacantes no autenticados descargar adjuntos privados estableciendo el segmento kind de la URL en page, icon o namespace. Los atacantes que conocen un id de adjunto de registro privado o módulo pueden solicitar la ruta original o de vista previa sin un token o firma para recuperar archivos a través de los límites de permiso de espacio de nombres y registro.
Traducción automática del texto original de NVD (en inglés).
CVSS
- Puntuación base
- 8.2
- Versión
- 4.0
- Vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días
- 0.29 %
- Percentil entre todas las CVEs puntuadas
- 21
- Fecha de la puntuación
- 20/10/2026
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 access85 % - Impacto principal
T1005Data from Local Systemcollection90 % - Impacto secundario
T1078Valid Accountsstealth · persistence · privilege escalation · initial access75 %
Vulnerabilidad de autorización incorrecta (CWE-863) en endpoints de Corteza accesibles sin autenticación (AV:N, PR:N, UI:N). Permite descarga de archivos privados conociendo el ID, violando límites de permisos.
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-863
Referencias
Mostrar las 6 referencias
- https://github.com/cortezaproject/corteza
- https://github.com/cortezaproject/corteza/blob/3835dfc4ac8bd89381753f09042ad147a4502576/server/compose/rest/attachment.go#L79-L122
- https://github.com/cortezaproject/corteza/blob/3835dfc4ac8bd89381753f09042ad147a4502576/server/compose/service/attachment.go#L123-L142
- https://github.com/cortezaproject/corteza/commit/3b68aa30c7261f729fcf8202f3eab9cf7d9168d3
- https://hackmd.io/@haind03/corteza-attachment-kind-confusion-unauth-read
- https://www.vulncheck.com/advisories/corteza-through-2024.9.10-unauthenticated-attachment-access-via-compose-attachment-endpoints
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-108729",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-108729",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-10-14T13:26:08.311523Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "disclosure@vulncheck.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.9,
"attackVector": "NETWORK",
"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
}
],
"cvssMetricV40": [
{
"type": "Secondary",
"source": "disclosure@vulncheck.com",
"cvssData": {
"Safety": "NOT_DEFINED",
"version": "4.0",
"Recovery": "NOT_DEFINED",
"baseScore": 8.2,
"Automatable": "NOT_DEFINED",
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"exploitMaturity": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"privilegesRequired": "NONE",
"subIntegrityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"vulnAvailabilityImpact": "NONE",
"availabilityRequirement": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"subConfidentialityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"confidentialityRequirement": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED"
}
}
]
},
"affected": [
{
"source": "disclosure@vulncheck.com",
"affectedData": [
{
"repo": "https://github.com/cortezaproject/corteza",
"vendor": "cortezaproject",
"product": "corteza",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "custom",
"lessThanOrEqual": "2024.9.10"
}
],
"packageURL": "pkg:github/cortezaproject/corteza",
"defaultStatus": "unaffected"
}
]
}
],
"published": "2026-10-11T13:17:16.750",
"references": [
{
"url": "https://github.com/cortezaproject/corteza",
"source": "disclosure@vulncheck.com"
},
{
"url": "https://github.com/cortezaproject/corteza/blob/3835dfc4ac8bd89381753f09042ad147a4502576/server/compose/rest/attachment.go#L79-L122",
"source": "disclosure@vulncheck.com"
},
{
"url": "https://github.com/cortezaproject/corteza/blob/3835dfc4ac8bd89381753f09042ad147a4502576/server/compose/service/attachment.go#L123-L142",
"source": "disclosure@vulncheck.com"
},
{
"url": "https://github.com/cortezaproject/corteza/commit/3b68aa30c7261f729fcf8202f3eab9cf7d9168d3",
"source": "disclosure@vulncheck.com"
},
{
"url": "https://hackmd.io/@haind03/corteza-attachment-kind-confusion-unauth-read",
"source": "disclosure@vulncheck.com"
},
{
"url": "https://www.vulncheck.com/advisories/corteza-through-2024.9.10-unauthenticated-attachment-access-via-compose-attachment-endpoints",
"source": "disclosure@vulncheck.com"
}
],
"vulnStatus": "Deferred",
"weaknesses": [
{
"type": "Secondary",
"source": "disclosure@vulncheck.com",
"description": [
{
"lang": "en",
"value": "CWE-863"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Corteza through 2024.9.10 contains an incorrect authorization vulnerability in compose attachment endpoints that allows unauthenticated attackers to download private attachments by setting the URL kind segment to page, icon, or namespace. Attackers who know a private record or module attachment id can request the original or preview route without a token or signature to retrieve files across namespace and record permission boundaries."
}
],
"lastModified": "2026-10-16T19:18:44.867",
"sourceIdentifier": "disclosure@vulncheck.com"
}