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Vulnerability record · CVE-2026-49980 · published 24 June 2026

CVE-2026-49980: Rclone missing authentication for critical function vulnerability

Rclone · Rclone

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.

9.8 CVSS 3.1 Critical EPSS 0.78% · top 45.8% CWE-306 · Missing authentication for critical functionCWE-78 · OS command injection
9.8CVSS 3.1 base score
0.78%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
7 Aug 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-49980), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.