CVE-2026-79780

Description

rclone before v1.75.0 fails to sanitize IBM IAM bearer tokens and SSE-C encryption keys during S3 redirect callbacks, allowing credentials to be preserved across scheme or host changes. Attackers observing network traffic from a trusted endpoint can capture reusable IBM IAM tokens on same-host HTTPS-to-HTTP downgrades or SSE-C keys on cross-origin redirects to access protected S3 objects.

CVSS Vector

References

• https://github.com/rclone/rclone/security/advisories/GHSA-8mxv-9xhp-86h4
• https://www.vulncheck.com/advisories/rclone-before-credential-exposure-via-s3-redirect
• https://github.com/rclone/rclone/security/advisories/GHSA-8mxv-9xhp-86h4