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CVE-2026-6550

MEDIUM

4.7

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung4.7

SchweregradMEDIUM

CVSS VektorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

AngriffsvektorLOCAL

KomplexitatHIGH

Erforderliche PrivilegienLOW

BenutzerinteraktionNONE

Veroffentlicht4/20/2026

Zuletzt geandert4/21/2026

Quellenvd

Honeypot-Sichtungen0

Schwachen (CWE)

CWE-757

Referenzen

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)

IOC Korrelationen

Keine Korrelationen erfasst

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