CVE-2026-73292
Semaphore UI is a web interface for managing DevOps tools. Prior to 2.18.21, the /api/users/{id}/password endpoint accepts a cross-site request using the authenticated user's semaphore session cookie without CSRF protection or current-password confirmation, allowing an unauthenticated attacker to change an administrator's or another user's password after user interaction. This issue is fixed in version 2.18.21.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
- Puntuación base: 8.3
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: 5/10/2026
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
T1203Exploitation for Client Executionexecution95 % - Impacto principal
T1078.001Default Accountsstealth · persistence · privilege escalation · initial access90 % - Impacto secundario
T1098.001Additional Cloud Credentialspersistence · privilege escalation85 %
Requiere interacción del usuario (UI:R en CVSS) para ejecutar CSRF en su sesión autenticada. El impacto principal es obtener acceso (cambio de contraseña) a cuentas administrativas (T1078.001), permitiendo luego manipulación de cuentas (T1098.001).
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-352, CWE-620
Referencias
- https://github.com/semaphoreui/semaphore/commit/2d6e2e3eb10e8bf688e2ab59609b909a012fad4c
- https://github.com/semaphoreui/semaphore/commit/c59c3dc9035badcbf0609c7d35679c06e590a956
- https://github.com/semaphoreui/semaphore/releases/tag/v2.18.21
- https://github.com/semaphoreui/semaphore/security/advisories/GHSA-8cj9-r88m-8945
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-73292",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-73292",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-08-12T22:09:05.787908Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "security-advisories@github.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 8.3,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L",
"integrityImpact": "HIGH",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "LOW",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.5,
"exploitabilityScore": 2.8
}
]
},
"affected": [
{
"source": "security-advisories@github.com",
"affectedData": [
{
"vendor": "semaphoreui",
"product": "semaphore",
"versions": [
{
"status": "affected",
"version": "< 2.18.21"
}
]
}
]
}
],
"published": "2026-08-12T16:17:22.343",
"references": [
{
"url": "https://github.com/semaphoreui/semaphore/commit/2d6e2e3eb10e8bf688e2ab59609b909a012fad4c",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/semaphoreui/semaphore/commit/c59c3dc9035badcbf0609c7d35679c06e590a956",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/semaphoreui/semaphore/releases/tag/v2.18.21",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/semaphoreui/semaphore/security/advisories/GHSA-8cj9-r88m-8945",
"source": "security-advisories@github.com"
}
],
"vulnStatus": "Deferred",
"weaknesses": [
{
"type": "Secondary",
"source": "security-advisories@github.com",
"description": [
{
"lang": "en",
"value": "CWE-352"
},
{
"lang": "en",
"value": "CWE-620"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Semaphore UI is a web interface for managing DevOps tools. Prior to 2.18.21, the /api/users/{id}/password endpoint accepts a cross-site request using the authenticated user's semaphore session cookie without CSRF protection or current-password confirmation, allowing an unauthenticated attacker to change an administrator's or another user's password after user interaction. This issue is fixed in version 2.18.21."
}
],
"lastModified": "2026-09-09T21:02:22.660",
"sourceIdentifier": "security-advisories@github.com"
}