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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
rclone rclone unaffected
Version Status Constraints
1.64.0 affected < 1.75.2
1.75.2 unaffected —

No data.

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Project Subscriptions

Vendors Products
Rclone Subscribe
Rclone Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/rclone/rclone/security/advisories/GHSA-gj73-fh6v-92fj cve-icon cve-icon
https://www.vulncheck.com/advisories/rclone-1.64.0-before-1.75.2-serve-webdav-authentication-bypass-via-options-requests cve-icon cve-icon
History

Sun, 25 Oct 2026 13:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Rclone 1.64.0 before 1.75.2 serve webdav Authentication Bypass via OPTIONS Requests
First Time appeared Rclone
Rclone rclone
Weaknesses CWE-200
CPEs cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:*
Vendors & Products Rclone
Rclone rclone
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-25T13:20:27.801Z

Reserved: 2026-10-25T12:27:12.266Z

Link: CVE-2026-116193

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-25T14:16:59.703

Modified: 2026-10-25T14:16:59.703

Link: CVE-2026-116193

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses