Cleartext transmission of sensitive information in rclone - #VU140655
Published: August 1, 2026
Vulnerability identifier: #VU140655
CSH Severity: Medium
CVSS v4: 6 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-319
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to cleartext transmission of sensitive information in the WebDAV redirect handling logic when following a same-host HTTPS-to-HTTP redirect. A remote attacker can observe the plaintext hop to disclose sensitive information.
Exploitation requires a legitimate endpoint, gateway, or accelerator to emit the unsafe redirect.
Affected software
rclone
Remediation
Install security update from vendor's website.
rclone - update to 1.75.0