CVE-2026-79779

Description

rclone versions before v1.75.0 fail to reject transport downgrades in redirect handling, allowing Basic authorization and Cookie headers to be replayed over plaintext HTTP after same-host HTTPS-to-HTTP redirects. An on-path attacker observing the plaintext hop can capture and reuse credentials to perform WebDAV operations with the compromised account's permissions.

CVSS Vector

References

• https://github.com/rclone/rclone/security/advisories/GHSA-h4mf-4v27-hggj
• https://www.vulncheck.com/advisories/rclone-before-webdav-credential-exposure-via-https-to-http-redirect