CVE-2026-116196
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductRclone
PublishedOct 25, 2026
First seenOct 25, 2026
Weakness typeCWE-319CWE-319
How to fix
Update
- rclone rclone1.75.2 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| rclone rclone | v < 1.75.2 | 1.75.2 |
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