CVE-2026-116196

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/rclone/rclone/security/advisories/GHSA-gpw7-77cq-9f72	Vendor Advisory
https://www.vulncheck.com/advisories/rclone-before-1.75.2-b2-credential-leak-on-redirect-via-b2-download-url	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:*

History

27 Oct 2026, 14:12

Type	Values Removed	Values Added
First Time		Rclone Rclone rclone
CPE		cpe:2.3:a:rclone:rclone::::::::
References	~~() https://github.com/rclone/rclone/security/advisories/GHSA-gpw7-77cq-9f72 -~~	() https://github.com/rclone/rclone/security/advisories/GHSA-gpw7-77cq-9f72 - Vendor Advisory
References	~~() https://www.vulncheck.com/advisories/rclone-before-1.75.2-b2-credential-leak-on-redirect-via-b2-download-url -~~	() https://www.vulncheck.com/advisories/rclone-before-1.75.2-b2-credential-leak-on-redirect-via-b2-download-url - Third Party Advisory

25 Oct 2026, 14:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-25 14:17

Updated : 2026-10-27 14:12

NVD link : CVE-2026-116196

Mitre link : CVE-2026-116196

CVE.ORG link : CVE-2026-116196

JSON object : View

Products Affected

rclone

rclone

CWE

CWE-319

Cleartext Transmission of Sensitive Information

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