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CVE-2026-6550

MEDIUM

4.7

Descripcion

Cryptographic algorithm downgrade in the caching layer of Amazon AWS Encryption SDK for Python before version 3.3.1 and before version 4.0.5 might allow an authenticated local threat actor to bypass key commitment policy enforcement via a shared key cache, resulting in ciphertext that can be decrypted to multiple different plaintexts. To remediate this issue, users should upgrade to version 3.3.1, 4.0.5 or above.

Detalles CVE

Puntuacion CVSS v3.14.7

SeveridadMEDIUM

Vector CVSSCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

Vector de ataqueLOCAL

ComplejidadHIGH

Privilegios requeridosLOW

Interaccion usuarioNONE

Publicado4/20/2026

Ultima modificacion4/21/2026

Fuentenvd

Avistamientos honeypot0

Debilidades (CWE)

CWE-757

Referencias

https://aws.amazon.com/security/security-bulletins/2026-017-aws/(ff89ba41-3aa1-4d27-914a-91399e9639e5)

https://github.com/aws/aws-encryption-sdk-python/releases/tag/v3.3.1(ff89ba41-3aa1-4d27-914a-91399e9639e5)

https://github.com/aws/aws-encryption-sdk-python/releases/tag/v4.0.5(ff89ba41-3aa1-4d27-914a-91399e9639e5)

https://github.com/aws/aws-encryption-sdk-python/security/advisories/GHSA-v638-38fc-rhfv(ff89ba41-3aa1-4d27-914a-91399e9639e5)

Correlaciones IOC

Sin correlaciones registradas

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