CVE-2026-59733: rclone Path Traversal

Description

Rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.74.4, rclone serve restic --private-repos enforces authorization using the routed user path segment while building the backend object key from the raw uncleaned URL path, allowing an authenticated user to include .. in a request such as //..//config and read, overwrite, or delete another user's private repository on backends that clean path components. This issue is fixed in version 1.74.4.

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CVSS v3.1 Score

8.8

HIGH

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

EPSS — Exploit Prediction

0.0055

Probability of exploitation

0.43%

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-22 Path Traversal

CWE-639 CWE-639

Affected Products

Vendor	Product	Versions
rclone	rclone	< 1.74.4

References

Advisories & Patches

https://github.com/rclone/rclone/commit/015fd0eba1cb138eef081517795fed47a2873f2d https://github.com/rclone/rclone/commit/dade21c1616035b044df0eef7ee6a85aeb06a139 https://github.com/rclone/rclone/security/advisories/GHSA-fqj9-69pf-6pjg

Exploits

https://github.com/rclone/rclone/security/advisories/GHSA-fqj9-69pf-6pjg

Other References

https://github.com/rclone/rclone/releases/tag/v1.74.4

Frequently Asked Questions

What is CVE-2026-59733? +

Rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.74.4, rclone serve restic --private-repos enforces authorization using the routed user path segment while building the backend object key from the raw uncleaned URL path, allowing an authenticated user to include .. in a request such as //..//config and read, overwrite, or delete another user's private repository on backends that clean path components. This issue is fixed in version 1.74.4. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-59733? +

CVE-2026-59733 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0055, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-59733? +

CVE-2026-59733 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-2026-59733? +

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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