CVE-2026-79780

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 v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-25 16:17

Updated : 2026-09-10 20:46

NVD link : CVE-2026-79780

Mitre link : CVE-2026-79780

CVE.ORG link : CVE-2026-79780

JSON object : View

Products Affected

No product.

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

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