CVE-2026-66771
SAPUI5 allows a key user with content adaptation privileges to inject malicious script content into persisted application changes. When another user subsequently opens the adapted application, the injected script executes in the victim's browser session. Successful exploitation could allow the attacker to access sensitive session data and perform unauthorized actions on behalf of the victim, resulting in a high impact on confidentiality and integrity. There is no impact on availability.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N
- Puntuación base: 6.1
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.38%
- Percentil entre todas las CVEs puntuadas: 30
- Fecha de la puntuación: 6/10/2026
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).
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-79
Referencias
JSON original (NVD)
Mostrar
{
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"metrics": {
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"id": "CVE-2026-66771",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-08-11T13:11:14.989435Z"
}
}
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"cvssMetricV31": [
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"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "HIGH",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.2,
"exploitabilityScore": 0.9
}
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"affected": [
{
"source": "cna@sap.com",
"affectedData": [
{
"vendor": "SAP_SE",
"product": "SAPUI5",
"versions": [
{
"status": "affected",
"version": "SAP_UI 750"
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{
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"version": "754"
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{
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"version": "755"
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{
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"published": "2026-08-11T01:17:23.407",
"references": [
{
"url": "https://me.sap.com/notes/3772071",
"source": "cna@sap.com"
},
{
"url": "https://url.sap/sapsecuritypatchday",
"source": "cna@sap.com"
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"description": [
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"value": "SAPUI5 allows a key user with content adaptation privileges to inject malicious script content into persisted application changes. When another user subsequently opens the adapted application, the injected script executes in the victim's browser session. Successful exploitation could allow the attacker to access sensitive session data and perform unauthorized actions on behalf of the victim, resulting in a high impact on confidentiality and integrity. There is no impact on availability."
}
],
"lastModified": "2026-08-26T19:00:14.450",
"sourceIdentifier": "cna@sap.com"
}