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CVE-2020-8897

25
FAUCET Score

CVE-2020-8897 is a high-severity weak robustness vulnerability affecting AWS Encryption SDKs for Java, Python, C, and Javascript prior to version 2.0.0. This flaw, stemming from the non-committing property of AEAD ciphers like AES-GCM, allows an authenticated attacker to craft a ciphertext that decrypts to multiple different plaintext results, potentially leading to high impact on confidentiality and integrity. While the CVSS score is 8.1 (High), there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.0.0CPE matchmatch criteria
cpe:2.3:a:amazon:aws_encryption_sdk:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.8MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
32.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 20th percentile among its peer group of 17,823 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

mavenpatch availablevia ghsa
Product: com.amazonaws:aws-encryption-sdk-javaFixed in: 2.0.0
pippatch availablevia ghsa
Product: aws-encryption-sdkFixed in: 2.0.0
github_advisoryworkaround availablevia nvd_reference
View patch

Vendor Advisories (1)

mavenGHSA-wqgp-vphw-hphfhigh

Security issues in AWS KMS and AWS Encryption SDKs: in-band protocol negotiation and robustness

Oct 12, 2021

References

aws.amazon.com / blogs/security/improved-client-side-encryption-explicit-keyids-and-key-commitment
Vendor Advisory
github.com / google/security-research/security/advisories/GHSA-wqgp-vphw-hphf
ExploitMitigationThird Party Advisory