CVE-2026-116193

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 74/100
Published: 2026-10-25 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
AT: None
VC: Low
VI: None
VA: None

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
rclone rclone 1.64.0 – 1.75.2
rclone rclone 1.64.0 < 1.75.2

Bug Bounty Relevance

74 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.9 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.25%
Raw Score 0.002490
Percentile 16.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00249
2026-10-28
0.00249

Intelligence Sources

mitre ref →
nvd ref →