CVE-2026-6550

Katalog CVE

CVSS 4.7 · Medium EPSS 0,10%

Kerentanan Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade'). Skor CVSS 3.1 4.7 (Medium) menurut CNA.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

20 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Awaiting Analysis

CVSS 3.1

4.7 (Medium), sumber CNA
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-757: Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')

EPSS (30 hari)

0,10% peluang dieksploitasi; lebih tinggi dari 0,7% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://aws.amazon.com/security/security-bulletins/2026-017-aws/
• https://github.com/aws/aws-encryption-sdk-python/releases/tag/v3.3.1
• https://github.com/aws/aws-encryption-sdk-python/releases/tag/v4.0.5
• https://github.com/aws/aws-encryption-sdk-python/security/advisories/GHSA-v638-38fc-rhfv