VulnerabilityModified

CVE-2026-41176

The RC endpoint `options/set` is exposed without `AuthRequired: true`, but it can mutate global runtime configuration, including the RC option block itself.

CRITICAL 9.2EPSS 32.7%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 32.7%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

Rclone is a command-line program to sync files and directories to and from different cloud storage providers. The RC endpoint `options/set` is exposed without `AuthRequired: true`, but it can mutate global runtime configuration, including the RC option block itself. Starting in version 1.45.0 and prior to version 1.73.5, an unauthenticated attacker can set `rc.NoAuth=true`, which disables the authorization gate for many RC methods registered with `AuthRequired: true` on reachable RC servers that are started without global HTTP authentication. This can lead to unauthorized access to sensitive administrative functionality, including configuration and operational RC methods. Version 1.73.5 patches the issue.

CVSS 4.0: 9.2 CRITICALCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 32.71% probability · 98th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-306, CWE-15
Affected: rclone/rclone
Source: security-advisories@github.com

EPSS trend

EPSS moved from 3.2% on 24 September 2026 to 32.7% on 30 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.