What’s Vulnerable › Vulnerabilities

CVE-2026-49980: Rclone: Unauthenticated command execution in `rclone rcd --rc-serve` via inline remote instantiation, bypassing CVE-2026-41179 fix

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-24 · updated 2026-08-07
• Weakness: CWE-306

Description

Rclone is a command-line program to sync files and directories to and from different cloud storage providers. From 1.46.0 until 1.74.3, rclone rcd --rc-serve accepts unauthenticated GET and HEAD requests to paths of the form: /[remote:path]/object. The remote value is parsed from the URL and passed to normal backend initialization. Inline remote configuration can set backend options that execute local commands during initialization. As a result, a single unauthenticated GET or HEAD request can execute a command as the rclone process user. This vulnerability is fixed in 1.74.3.

Affected products

• rclone: from 1.46 before 1.74.3 — fixed in 1.74.3

How to fix

Upgrade to a fixed version: rclone 1.74.3. Check the vendor advisory for mitigations.

References

• https://github.com/rclone/rclone/security/advisories/GHSA-qw24-gh76-8rvv
• https://access.redhat.com/security/cve/CVE-2026-49980
• https://bugzilla.redhat.com/show_bug.cgi?id=2492478
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49980.json

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