Information Exposure Affecting amazon.extensions.s3.encryption package, versions [2.1.0,3.2.2)[4.0.0,4.0.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DOTNET-AMAZONEXTENSIONSS3ENCRYPTION-21198771
- published18 Oct 2026
- disclosed14 Oct 2026
- creditUnknown
Introduced: 14 Oct 2026
NewCVE-2026-110310 (opens in a new tab)How to fix?
Upgrade Amazon.Extensions.S3.Encryption to version 3.2.2, 4.0.3 or higher.
Overview
Amazon.Extensions.S3.Encryption is an easy-to-use Amazon S3 encryption client that allows you to secure your sensitive data before you send it to Amazon S3.
Affected versions of this package are vulnerable to Information Exposure via manipulation of the object's metadata to downgrade the padding scheme to PKCS#1 v1.5. An attacker can recover the RSA-wrapped envelope key and decrypt sensitive data by exploiting the padding oracle vulnerability.