CVE-2026-6550 | BDVDB-2026-327708 Detail
AWSAWS Encryption SDK for Python
Description#
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.
Impact#
CAPEC-620 Drop Encryption Level
Weaknesses#
- CWE-757 Selection of Less-Secure algorithm during negotiation ('algorithm downgrade')
References#
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.