What is CVE-2026-49980?

CVE-2026-49980 is a critical-severity vulnerability in Rclone, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-06-24.

How severe is CVE-2026-49980?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Rclone

CVE-2026-49980

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…

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Rclone — versions >= 1.46.0, < 1.74.3

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-49980?: CVE-2026-49980 is a critical-severity vulnerability in Rclone, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-06-24.
How severe is CVE-2026-49980?: Critical severity. CVSS v3 base score is 9.8 out of 10.