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CVE-2026-86771

Estado: AnalizadaAlta (8.3)—

Snipe-IT versions before 8.7.0 fail to HTML-escape the employee_num field in the acceptance PDF generator, allowing attackers with users.edit permission to inject img tags into TCPDF's writeHTML() function. Attackers can craft a malicious employee_num value containing an img tag with an arbitrary HTTP(S) URL to trigger server-side requests to internal services, cloud metadata endpoints, or external targets when a victim signs an asset acceptance.

CVSS

Probabilidad de explotación (EPSS)

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.

UI:R + acceso local (PR:L) sin ejecución de comandos → T1203. Inyección de img tags en PDF dispara requests SSRF (T1090). Acceso a metadatos internos (T1005) como impacto secundario.

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

SSL/TLS InspectionNetwork Intrusion PreventionFilter Network TrafficApplication Isolation and SandboxingExploit ProtectionUpdate Software

Tecnologías afectadas (1)

Snipeitapp — Snipe-it

CWE

Referencias

JSON original (NVD)

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          "options": [
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          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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    },
    {
      "url": "https://www.vulncheck.com/advisories/snipe-it-before-8.7.0-server-side-request-forgery-via-employee-num",
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  "vulnStatus": "Analyzed",
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    }
  ],
  "lastModified": "2026-09-16T20:28:50.710",
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