CVE-2026-107276
Gravedad CVSS v4.0:
MEDIA
Tipo:
CWE-362
Ejecución concurrente utilizando recursos compartidos con una incorrecta sincronización (Condición de carrera)
Fecha de publicación:
07/10/2026
Última modificación:
07/10/2026
Descripción
*** Pendiente de traducción *** MISP contains a race condition in the email-based one-time password (OTP) login flow. When two HTTP requests carrying the same valid OTP are submitted concurrently, both can successfully authenticate and establish a session. The root cause is that the OTP value is read from the shared store, validated, and then deleted in separate non-atomic steps, allowing a second in-flight request to read the same value before the first request&#39;s deletion takes effect.<br />
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Preconditions:<br />
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- The target MISP instance has email OTP login enabled.<br />
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- The attacker possesses a valid, unexpired OTP (e.g., via email interception or social engineering).<br />
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- The attacker can issue two HTTP POST requests in close temporal proximity.<br />
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Impact:<br />
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- The one-time-use guarantee of the OTP is violated; a single code can yield two authenticated sessions.<br />
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- This weakens the authentication control and may facilitate unauthorized access if the OTP is shared or intercepted.<br />
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Affected versions:
Impacto
Puntuación base 4.0
6.30
Gravedad 4.0
MEDIA