Vulnerability Intelligence Report
Rclone 1.64.0 before 1.75.2 serve webdav Authentication Bypass via OPTIONS Requests
CVE-2026-116193
Rclone from 1.64.0 before 1.75.2 contains an authentication bypass vulnerability in serve webdav that lets unauthenticated attackers skip authentication by sending OPTIONS requests. Attackers can probe arbitrary paths and compare Allow header values to determine whether files or collections exist, enabling namespace enumeration.
Information Disclosure
No Active Exploit Signals
CVSS Base Score
6.9
MEDIUM
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-200 ↗Exposure of Sensitive Information to an Unauthorized Actor
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| rclone | rclone | 1.64.0 < 1.75.2 (affected), 1.75.2 (unaffected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
GitHub Advisory
Vulnerability Class
Information Disclosure
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VulnCheck · Bug Bounty Provider · USA |
| Reserved | 2026-10-25T12:27:12 |
| Published | 2026-10-25T13:20:27 |
| Patch Date | 2026-10-09 |
| Last Updated | 2026-10-25T13:20:27 |
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