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CVE-2026-25555

Estado: AplazadaCrítica (9.3)—

OpenBullet2 through version 0.3.2 contains an authentication bypass vulnerability in the API key authentication middleware that allows unauthenticated attackers to gain admin access by supplying an empty X-Api-Key header value. Attackers can exploit the middleware's comparison of the supplied header against an empty AdminApiKey default string to access the admin console and all API endpoints without valid credentials.

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.

Vulnerabilidad en API expuesta (AV:N/PR:N/UI:N) que permite bypass de autenticación con header vacío para acceso admin sin credenciales válidas. Acceso a endpoints sensibles y datos.

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

Privileged Account ManagementApplication Developer GuidanceActive Directory ConfigurationVulnerability ScanningUser TrainingUser Account Management

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Openbullet — Openbullet2AI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-25555",
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          "options": [
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  "published": "2026-06-08T17:16:41.080",
  "references": [
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      "url": "https://hackernoon.com/one-empty-header-to-admin-how-an-auth-bypass-breaks-openbullet2",
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  "vulnStatus": "Deferred",
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      "value": "OpenBullet2 through version 0.3.2 contains an authentication bypass vulnerability in the API key authentication middleware that allows unauthenticated attackers to gain admin access by supplying an empty X-Api-Key header value. Attackers can exploit the middleware's comparison of the supplied header against an empty AdminApiKey default string to access the admin console and all API endpoints without valid credentials."
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    }
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  "lastModified": "2026-07-23T07:10:00.113",
  "sourceIdentifier": "disclosure@vulncheck.com"
}