CVE-2021-21663
Estado: ModificadaMedia (4.3)—
A missing permission check in Jenkins XebiaLabs XL Deploy Plugin 7.5.8 and earlier allows attackers with Overall/Read permission to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing Username/password credentials stored in Jenkins.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- Puntuación base: 4.3
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.00%
- Percentil entre todas las CVEs puntuadas: 62
- 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)
Referencias
JSON original (NVD)
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{
"id": "CVE-2021-21663",
"cveTags": [],
"metrics": {
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"type": "Primary",
"source": "nvd@nist.gov",
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"baseScore": 4,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
"authentication": "SINGLE",
"integrityImpact": "NONE",
"accessComplexity": "LOW",
"availabilityImpact": "NONE",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 2.9,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 8,
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"affected": [
{
"source": "jenkinsci-cert@googlegroups.com",
"affectedData": [
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"vendor": "Jenkins project",
"product": "Jenkins XebiaLabs XL Deploy Plugin",
"versions": [
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"version": "7.5.6",
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"published": "2021-06-10T15:15:08.837",
"references": [
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"tags": [
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"source": "jenkinsci-cert@googlegroups.com"
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{
"url": "https://www.jenkins.io/security/advisory/2021-06-10/#SECURITY-1982",
"tags": [
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"source": "jenkinsci-cert@googlegroups.com"
},
{
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"tags": [
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"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.jenkins.io/security/advisory/2021-06-10/#SECURITY-1982",
"tags": [
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"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"descriptions": [
{
"lang": "en",
"value": "A missing permission check in Jenkins XebiaLabs XL Deploy Plugin 7.5.8 and earlier allows attackers with Overall/Read permission to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing Username/password credentials stored in Jenkins."
},
{
"lang": "es",
"value": "Una comprobación de permiso faltante en Jenkins XebiaLabs XL Deploy Plugin versión 7.5.8 y anteriores, permite a atacantes con permiso de Overall/Read conectarse a una URL especificada por el atacante usando IDs de credenciales especificadas por el atacante obtenidas mediante otro método, capturando credenciales de nombre de usuario/contraseña almacenadas en Jenkins"
}
],
"lastModified": "2026-06-17T03:35:57.363",
"configurations": [
{
"nodes": [
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"cpeMatch": [
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"vulnerable": true,
"matchCriteriaId": "790D1E34-A5F2-42A5-889E-FD2B39E5E06A",
"versionEndIncluding": "7.5.8"
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"operator": "OR"
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],
"sourceIdentifier": "jenkinsci-cert@googlegroups.com"
}