PYSEC-2026-2387 AWS Encryption SDK for Python: Key commitment policy bypass via shared key cache

Summary AWS Encryption SDK ESDK for Python is a client-side encryption library. An issue exists where, under certain circumstances, a specific cryptographic algorithm downgrade in the caching layer might allow an authenticated local threat actor to bypass key commitment policy enforcement via a...

CVE-2026-6550

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...

AWS Encryption SDK for Python: Key commitment policy bypass via shared key cache

Summary AWS Encryption SDK ESDK for Python is a client-side encryption library. An issue exists where, under certain circumstances, a specific cryptographic algorithm downgrade in the caching layer might allow an authenticated local threat actor to bypass key commitment policy enforcement via a...

EUVD-2026-23943

AWS Encryption SDK for Python: Key commitment policy bypass via shared key cache...

CVE-2026-6550

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...

Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')

Overview aws-encryption-sdk is an AWS Encryption SDK implementation for Python Affected versions of this package are vulnerable to Selection of Less-Secure Algorithm During Negotiation 'Algorithm Downgrade' via the shared key cache. An attacker can bypass key commitment policy enforcement by...

CVE-2026-6550

The vulnerability CVE-2026-6550 affects the AWS Encryption SDK for Python in its caching layer. A cryptographic downgrade in the key cache could allow an authenticated local actor to bypass key commitment policy enforcement, enabling ciphertext to be decrypted into multiple possible plaintexts. A...

CVE-2026-6550

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...

CVE-2026-6550 Key commitment policy bypass via shared key cache in AWS Encryption SDK for Python

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...

PT-2026-33829

Name of the Vulnerable Software and Affected Versions Amazon AWS Encryption SDK for Python versions prior to 3.3.1 Amazon AWS Encryption SDK for Python versions prior to 4.0.5 Description A cryptographic algorithm downgrade in the caching layer may allow an authenticated local threat actor to...

EUVD-2020-0050

Malware in sbrugna...

CVE-2024-23680

AWS Encryption SDK for Java versions 2.0.0 to 2.2.0 and less than 1.9.0 incorrectly validates some invalid ECDSA signatures...

CVE-2020-8897

A weak robustness vulnerability exists in the AWS Encryption SDKs for Java, Python, C and Javalcript prior to versions 2.0.0. Due to the non-committing property of AES-GCM and other AEAD ciphers such as AES-GCM-SIV or XChaCha20Poly1305 used by the SDKs to encrypt messages, an attacker can craft a...

Duplicate Advisory: Improper Verification of Cryptographic Signature in aws-encryption-sdk-java

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-55xh-53m6-936r. This link is maintained to preserve external references. Original Description AWS Encryption SDK for Java versions 2.0.0 to 2.2.0 and less than 1.9.0 incorrectly validates some invalid ECDSA...

CVE-2024-23680

AWS Encryption SDK for Java versions 2.0.0 to 2.2.0 and less than 1.9.0 incorrectly validates some invalid ECDSA signatures...

Code injection

AWS Encryption SDK for Java versions 2.0.0 to 2.2.0 and less than 1.9.0 incorrectly validates some invalid ECDSA signatures...

CVE-2024-23680 AWS Encryption SDK for Java Improper Verification of Cryptographic Signature

AWS Encryption SDK for Java versions 2.0.0 to 2.2.0 and less than 1.9.0 incorrectly validates some invalid ECDSA signatures...

CVE-2024-23680

CVE-2024-23680 affects the AWS Encryption SDK for Java (versions 2.0.0–2.2.0 and older than 1.9.0). The issue is that the library incorrectly validates certain invalid ECDSA signatures, with Red Hat/CVE and OSV entries corroborating the vulnerable range and nature. The practical impact stated acr...

CVE-2024-23680 AWS Encryption SDK for Java Improper Verification of Cryptographic Signature

AWS Encryption SDK for Java versions 2.0.0 to 2.2.0 and less than 1.9.0 incorrectly validates some invalid ECDSA signatures...

Amazon AWS Encryption SDK Data Forgery Issue Vulnerability

The Amazon AWS Encryption SDK is a development toolkit for encryption applications from Amazon.com, Inc. A security vulnerability exists in AWS Encryption SDK for Java versions prior to 1.9.0, 2.0.0 through 2.2.0, which stems from incorrectly validating some invalid ECDSA signatures...