CVE-2026-116196

MediumCVSS 5.3/10Last modified Nov 4, 2026

Description

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-319

Affected software

Vendor	Product	Versions
rclone	rclone	< 1.75.2

References

https://github.com/rclone/rclone/security/advisories/GHSA-gpw7-77cq-9f72Vendor Advisory
https://www.vulncheck.com/advisories/rclone-before-1.75.2-b2-credential-leak-on-redirect-via-b2-download-urlThird Party Advisory

Timeline

Published: Oct 25, 2026
Last modified: Nov 4, 2026
NVD status: Analyzed

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