CVE-2026-103870
A flaw was found in pulp-rpm when it publishes a distribution tree. Addon and variant ids from .treeinfo are used as directory names. A user who can sync or upload that tree can make the publish task create a new directory outside the task work area and write that tree's repository metadata and packages there, as the Pulp worker user. An existing file or directory is not replaced. The flaw does not disclose data and does not stop the service.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
- Puntuación base: 5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.23%
- Percentil entre todas las CVEs puntuadas: 13
- Fecha de la puntuación: 7/10/2026
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
T1210Exploitation of Remote Serviceslateral movement75 % - Impacto principal
T1565.001Stored Data Manipulationimpact70 %
Acceso remoto con autenticación (PR:L) a servicio de sincronización de Pulp RPM; manipulación de directorios de publicación escribiendo metadatos fuera del área de trabajo.
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-22
Referencias
JSON original (NVD)
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{
"id": "CVE-2026-103870",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Primary",
"source": "secalert@redhat.com",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 5,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
},
"impactScore": 1.4,
"exploitabilityScore": 3.1
}
]
},
"affected": [
{
"source": "secalert@redhat.com",
"affectedData": [
{
"cpes": [
"cpe:/a:redhat:satellite:6"
],
"vendor": "Red Hat",
"product": "Red Hat Satellite 6",
"packageName": "python3.12-pulp-rpm",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:satellite:6"
],
"vendor": "Red Hat",
"product": "Red Hat Satellite 6",
"packageName": "python-pulp-rpm",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:rhui:4::el8"
],
"vendor": "Red Hat",
"product": "Red Hat Update Infrastructure 4 for Cloud Providers",
"packageName": "python-pulp-rpm",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unaffected"
},
{
"cpes": [
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],
"vendor": "Red Hat",
"product": "Red Hat Update Infrastructure 4 for Cloud Providers",
"packageName": "python-pulp-rpm-client",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unaffected"
},
{
"cpes": [
"cpe:/a:redhat:rhui:5::el9"
],
"vendor": "Red Hat",
"product": "Red Hat Update Infrastructure 5",
"packageName": "python-pulp-rpm-client",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unaffected"
},
{
"cpes": [
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],
"vendor": "Red Hat",
"product": "Red Hat Update Infrastructure 5",
"packageName": "rhui5/rhua-rhel9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unaffected"
},
{
"cpes": [
"cpe:/a:redhat:rhui:5::el9"
],
"vendor": "Red Hat",
"product": "Red Hat Update Infrastructure 5",
"packageName": "rhui5/rhua-tp-rhel9",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"defaultStatus": "unaffected"
}
]
}
],
"published": "2026-10-07T06:16:35.373",
"references": [
{
"url": "https://access.redhat.com/security/cve/CVE-2026-103870",
"source": "secalert@redhat.com"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2544606",
"source": "secalert@redhat.com"
}
],
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"type": "Primary",
"source": "secalert@redhat.com",
"description": [
{
"lang": "en",
"value": "CWE-22"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in pulp-rpm when it publishes a distribution tree. Addon and variant ids from .treeinfo are used as directory names. A user who can sync or upload that tree can make the publish task create a new directory outside the task work area and write that tree's repository metadata and packages there, as the Pulp worker user. An existing file or directory is not replaced. The flaw does not disclose data and does not stop the service."
}
],
"lastModified": "2026-10-07T14:47:21.140",
"sourceIdentifier": "secalert@redhat.com"
}