Name: CVE-2026-79782: Cleartext Transmission of Sensitive Information
Creator: Rapid7
Published: 2026-08-25T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-79782, CWE-319, CVSS 3.1, EPSS 0.00132

rclone before 1.74.4 fails to strip the X-Amz-Security-Token header when an S3 redirect changes scheme from HTTPS to HTTP on the same host. Attackers can intercept plaintext HTTP traffic to capture AWS STS session tokens sent in request headers.

CVSS Details

CVSS 4.0 Base Score: 9.3 (CRITICAL)
CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
CVSS 3.1 Base Score: 3.1
CVSS 3.1 Vector: (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Amazon_linux_2023	—	Upgrade rcloneUpgrade rclone-debugsourceUpgrade rclone-debuginfo	Sep 30, 2026	Aug 25, 2026

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CVSS Details

Covered by Rapid7

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