CVE-2026-116196
Published:October 25, 2026
Updated:October 26, 2026
Rclone before v1.75.2 contains a credential exposure vulnerability in the b2 backend that leaks the live account Authorization token and SSE-C keys on HTTP redirects from --b2-download-url hosts. Attackers can observe a same-host HTTPS-to-HTTP downgrade redirect to capture the cleartext B2 token, or receive cross-host redirects disclosing SSE-C customer encryption keys.
Affected Packages
https://github.com/rclone/rclone.git (GITHUB):
Affected version(s) >=v1.47.0 <v1.75.2Fix Suggestion:
Update to version v1.75.2github.com/rclone/rclone (GO):
Affected version(s) >=v1.47.0 <v1.75.2Fix Suggestion:
Update to version v1.75.2Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
6
Attack Vector
ADJACENT
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
ADJACENT
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Cleartext Transmission of Sensitive Information