P4Verified

CVE-2026-110310: Amazon.Extensions.S3.Encryption 2.1.0 through 2.*, 3.0.0 through 3.2.1, 4.0.0 through 4.0.2

CVE-2026-110310. CVSS 3.1 base score 5.3 (MEDIUM, Source advisory).

Affected technology

Amazon.Extensions.S3.Encryption · 2.1.0 through 2.*, 3.0.0 through 3.2.1, 4.0.0 through 4.0.2
Amazon

Component: Not specified by the source

Attack conditions (Source advisory, CVSS 4.0): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

The user can use a PKCS#1 v1.5 padding oracle to recover the RSA-wrapped envelope key and decrypt the object. Source advisory’s CVSS 4.0 assessment (base score 6.0/10) rates confidentiality impact as high; integrity and availability impact as none.

Published 15-Oct-2026 01:10 UTC

CWE: CWE-204, CWE-757
CCR priority: 21.2 /100 (P4)
CVSS 3.1: 5.3 /10 · CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N · Source advisory
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-15 01:07:31.726917+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-110310.html