Unauthenticated local API in RClone Manager reachable from web pages
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-306.
Summary
RClone Manager before 0.2.7 starts the local rclone rcd service on 127.0.0.1:51900 without authentication and allows cross-origin requests (CWE-306). A malicious web page opened by a user while the daemon runs can send requests to this API with the user's operating-system privileges. An attacker can read configured storage credentials and potentially access, modify or exfiltrate local files and files on configured remotes.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
Description from the CNA
RClone Manager is a cross-platform GUI application designed to help users manage Rclone remotes efficiently. Prior to 0.2.7, RClone Manager starts the local rclone rcd service on 127.0.0.1:51900 with --rc-no-auth, --rc-allow-origin *, and --rc-serve. A malicious web page opened by a user while the daemon is running can therefore send cross-origin requests to the unauthenticated local API with the user's operating-system privileges. The requests can disclose configured storage credentials and potentially access, upload, modify, or exfiltrate locally stored files accessible to the user and files available through configured remotes; the advisory's possible command-execution impact remains unconfirmed. This issue is fixed in version 0.2.7.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Zarestia-Dev | rclone-manager | before 0.2.7 | 0.2.7 | Patch available | CNA |
- rclone-manager VendorZarestia-Dev Affected before 0.2.7 Fixed in 0.2.7 Patch available CNA
Remediation
Update RClone Manager to version 0.2.7, which fixes this issue.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
- Fix · CNA rclone-manager (Zarestia-Dev) Fixed in 0.2.7
Timeline
- 2026-10-13 Threatist record created from CVE-2026-55183
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences