CVE-2025-14764

MEDIUM

AWS Amazon-s3-encryption-client-go - Broken Cryptographic Algorithm

Title source: rule

Description

Missing cryptographic key commitment in the Amazon S3 Encryption Client for Go may allow a user with write access to the S3 bucket to introduce a new EDK that decrypts to different plaintext when the encrypted data key is stored in an "instruction file" instead of S3's metadata record. To mitigate this issue, upgrade Amazon S3 Encryption Client for Go to version 4.0 or later.

References (3)

[Various Sources] https://aws.amazon.com/security/security-bulletins/AWS-2025-032/

[Vendor Advisory] https://github.com/aws/amazon-s3-encryption-client-go/security/advisories/GHSA-3g75-q268-r9r6

[Release Notes] https://github.com/aws/amazon-s3-encryption-client-go/releases/tag/v4.0.0

Scores

CVSS v3 5.3

EPSS 0.0001

EPSS Percentile 1.7%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-327

Status published

Products (2)

aws/amazon-s3-encryption-client-go 0 - 4.0.0Go

AWS/S3 Encryption Client for Go 4.0

Published Dec 17, 2025

Tracked Since Feb 18, 2026