CVE-2021-42838
Estado: ModificadaMedia (6.1)—
Grand Vice info Co. webopac7 book search field parameter does not properly restrict the input of special characters, thus unauthenticated attackers can inject JavaScript syntax remotely, and further perform reflective XSS attacks.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Puntuación base: 6.1
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.63%
- Percentil entre todas las CVEs puntuadas: 48
- 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)
CWE
- CWE-79
Referencias
JSON original (NVD)
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{
"id": "CVE-2021-42838",
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"type": "Primary",
"source": "nvd@nist.gov",
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"version": "2.0",
"baseScore": 4.3,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
"authentication": "NONE",
"integrityImpact": "PARTIAL",
"accessComplexity": "MEDIUM",
"availabilityImpact": "NONE",
"confidentialityImpact": "NONE"
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"source": "twcert@cert.org.tw",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "REQUIRED",
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"impactScore": 2.7,
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"affected": [
{
"source": "twcert@cert.org.tw",
"affectedData": [
{
"vendor": "Grand Vice info Co.",
"product": "webopac7",
"versions": [
{
"status": "affected",
"version": "7.1.20160701"
},
{
"status": "affected",
"version": "1.8.20160701"
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],
"published": "2021-11-15T10:15:07.857",
"references": [
{
"url": "https://www.twcert.org.tw/tw/cp-132-5286-b92c8-1.html",
"tags": [
"Third Party Advisory"
],
"source": "twcert@cert.org.tw"
},
{
"url": "https://www.twcert.org.tw/tw/cp-132-5286-b92c8-1.html",
"tags": [
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"source": "af854a3a-2127-422b-91ae-364da2661108"
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"vulnStatus": "Modified",
"weaknesses": [
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"type": "Secondary",
"source": "twcert@cert.org.tw",
"description": [
{
"lang": "en",
"value": "CWE-79"
}
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}
],
"descriptions": [
{
"lang": "en",
"value": "Grand Vice info Co. webopac7 book search field parameter does not properly restrict the input of special characters, thus unauthenticated attackers can inject JavaScript syntax remotely, and further perform reflective XSS attacks."
},
{
"lang": "es",
"value": "El parámetro search field de Grand Vice info Co. no restringe apropiadamente la entrada de caracteres especiales, por lo que atacantes no autenticados pueden inyectar sintaxis de JavaScript de forma remota, y además llevar a cabo ataques de tipo XSS reflexivos"
}
],
"lastModified": "2026-06-17T04:10:11.320",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
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"sourceIdentifier": "twcert@cert.org.tw"
}