CVE-2026-41179

Summary

Rclone is a command-line program to sync files and directories to and from different cloud storage providers. Starting in version 1.48.0 and prior to version 1.73.5, the RC endpoint operations/fsinfo is exposed without AuthRequired: true and accepts attacker-controlled fs input. Because rc.GetFs(...) supports inline backend definitions, an unauthenticated attacker can instantiate an attacker-controlled backend on demand. For the WebDAV backend, bearer_token_command is executed during backend initialization, making single-request unauthenticated local command execution possible on reachable RC deployments without global HTTP authentication. Version 1.73.5 patches the issue.

Affected Software

Weaknesses

• CWE-78: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
• CWE-306: CWE-306: Missing Authentication for Critical Function

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: yes
  • Technical Impact: total

Additional References

• https://github.com/rclone/rclone/security/advisories/GHSA-jfwf-28xr-xw6q

github.com/rclone/rclone: Rclone: Unauthenticated local command execution via exposed RC endpoint

Additional References

• https://access.redhat.com/security/cve/CVE-2026-41179
• https://bugzilla.redhat.com/show_bug.cgi?id=2460988
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41179.json

References

• https://github.com/rclone/rclone/security/advisories/GHSA-jfwf-28xr-xw6q
• https://github.com/rclone/rclone/commit/2a9e952b38e03a96bf40c9eb6e8e22199865ee3b
• https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/backend/webdav/webdav.go
• https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/operations/rc.go
• https://github.com/rclone/rclone/blob/bf55d5e6d37fd86164a87782191f9e1ffcaafa82/fs/rc/cache.go
• https://github.com/rclone/rclone/releases/tag/v1.73.5
• https://rclone.org/changelog/#v1-73-5-2026-04-19

• ←Previous
• Next→