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TI-2020-07148 Aliases CVE-2020-8897GHSA-wqgp-vphw-hphf

Robustness weakness in AWS KMS and Encryption SDKs

Priority LOW 35CWE-310Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-327.

Summary

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 (X)ChaCha20Poly1305) used by the SDKs to encrypt messages, an attacker can craft a unique cyphertext which will decrypt to multiple different results, and becomes especially relevant in a multi-recipient setting. We recommend users update their SDK to 2.0.0 or later.

Why it matters now

EPSS 0.00399 34th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed AWS SDK (Amazon): 2.0.0com.amazonaws:aws-encryption-sdk-java (Maven): 2.0.0+1 more product

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
AWSAWS SDKstable to before 2.0.02.0.0Patch availableCNA
—com.amazonaws:aws-encryption-sdk-java (Maven)before 2.0.02.0.0Patch availableGHSA-wqgp-vphw-hphf
—aws-encryption-sdk (PyPI)before 2.0.02.0.0Patch availableGHSA-wqgp-vphw-hphf
  • AWS SDK VendorAWS Affected stable to before 2.0.0 Fixed in 2.0.0 Patch available CNA
  • com.amazonaws:aws-encryption-sdk-java (Maven) Vendor— Affected before 2.0.0 Fixed in 2.0.0 Patch available GHSA-wqgp-vphw-hphf
  • aws-encryption-sdk (PyPI) Vendor— Affected before 2.0.0 Fixed in 2.0.0 Patch available GHSA-wqgp-vphw-hphf

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:amazon:aws_encryption_sdk:*:*:*:*:*:*:*:*before 2.0.0VulnerableAWS
  • cpe:2.3:a:amazon:aws_encryption_sdk:*:*:*:*:*:*:*:* Versions before 2.0.0 Vulnerable ·AWS

Remediation

  • Fix · CNA AWS SDK (Amazon) Fixed in 2.0.0
  • Fix · GHSA-wqgp-vphw-hphf com.amazonaws:aws-encryption-sdk-java (Maven) Fixed in 2.0.0 Advisory →
  • Fix · GHSA-wqgp-vphw-hphf aws-encryption-sdk (PyPI) Fixed in 2.0.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-8897
  2. 2026-10-03 Alias added: GHSA-wqgp-vphw-hphf

References

Exploit 1

Advisory 2

Other 2

  • TI-2024-15698 AWS Encryption SDK for Java Improper Verification of Cryptographic Signature CVSS 3.1MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences