CVE-2026-49980

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 v3.1 Score

9.8

CRITICAL

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

EPSS — Exploit Prediction

0.0070

Probability of exploitation

0.49%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-306 Missing Authentication

CWE-78 OS Command Injection

Affected Products

Vendor	Product	Versions
rclone	rclone	1.46 — 1.74.3

References

Advisories & Patches

https://github.com/rclone/rclone/security/advisories/GHSA-qw24-gh76-8rvv

Other References

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

Frequently Asked Questions

What is 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]/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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-49980? +

CVE-2026-49980 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0070, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-49980? +

CVE-2026-49980 affects products from rclone, specifically: rclone. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-49980? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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