CVE-2026-81766
The Really Simple Security WordPress plugin before 9.8.0 does not check that the user is allowed to install Really Simple Security WordPress plugin before 9.8.0 before installing one from a user-supplied URL, allowing an administrator of a subsite on a multisite network to install and execute arbitrary code in the network-shared Really Simple Security WordPress plugin before 9.8.0 directory, which WordPress otherwise reserves to the network administrator. Exploitation requires the network administrator to have enabled the Really Simple Security WordPress plugin before 9.8.0 administration menu for subsites, which is not the default.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 6.6
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.43%
- Percentil entre todas las CVEs puntuadas: 36
- 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-269
Referencias
JSON original (NVD)
Mostrar
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"role": "CISA Coordinator",
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{
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{
"technicalImpact": "total"
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"version": "2.0.3",
"timestamp": "2026-08-31T12:30:08.806418Z"
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"userInteraction": "NONE",
"attackComplexity": "HIGH",
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"impactScore": 5.9,
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"affected": [
{
"source": "contact@wpscan.com",
"affectedData": [
{
"vendor": "Unknown",
"product": "Really Simple Security",
"versions": [
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"version": "0",
"lessThan": "9.8.0",
"versionType": "semver"
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"published": "2026-08-30T07:17:21.890",
"references": [
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"value": "The Really Simple Security WordPress plugin before 9.8.0 does not check that the user is allowed to install Really Simple Security WordPress plugin before 9.8.0 before installing one from a user-supplied URL, allowing an administrator of a subsite on a multisite network to install and execute arbitrary code in the network-shared Really Simple Security WordPress plugin before 9.8.0 directory, which WordPress otherwise reserves to the network administrator. Exploitation requires the network administrator to have enabled the Really Simple Security WordPress plugin before 9.8.0 administration menu for subsites, which is not the default."
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"lastModified": "2026-08-31T20:14:36.250",
"sourceIdentifier": "contact@wpscan.com"
}