CVE-2026-79780rclone before v1.75.0 Credential Exposure via S3 Redirect

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.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• GitHub Security Advisory (GHSA-8mxv-9xhp-86h4) vendor-advisory
• VulnCheck Advisory: rclone before v1.75.0 Credential Exposure via S3 Redirect third-party-advisory