CVE-2026-71309Public exploitNetwork attack vectorHinoki check available

Backend root escape via leading parent paths

Published Aug 5, 2026 · Updated Aug 5, 2026

Path traversal in rclone serve restic 1.40.0 through 1.74.4 allows remote authenticated users to access objects outside the published backend root. The WithRemote middleware accepts leading ../ components because path.Clean preserves them, then forwards the unsafe path to backend GET, HEAD, POST, and DELETE handlers. Exploitation requires a reachable REST endpoint, a published backend subdirectory, and backend credentials that reach parent or sibling objects; affected backends permit reading, creating, overwriting, or deleting those objects.

CVSS severity8.6
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Path traversal in rclone serve restic 1.40.0 through 1.74.4 allows remote authenticated users to access objects outside the published backend root. The WithRemote middleware accepts leading ../ components because path.Clean preserves them, then forwards the unsafe path to backend GET, HEAD, POST, and DELETE handlers. Exploitation requires a reachable REST endpoint, a published backend subdirectory, and backend credentials that reach parent or sibling objects; affected backends permit reading, creating, overwriting, or deleting those objects.

The record

CVE
CVE-2026-71309
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
Rclone
Product
rclone
Classifications
CWE-22, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 1.40.0, < 1.75.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Rclone · rcloneversion=>= 1.40.0, < 1.75.0

Published CVSS scores

8.6GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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