CVE-2026-71283Network attack vectorHinoki check available

Arbitrary file writes via unfiltered tar extraction

Published Aug 5, 2026 · Updated Aug 5, 2026

Path traversal in LF Edge Fledge 3.1.0 and earlier allows remote authenticated users to write files via a crafted backup archive. The upload_backup handler passes archive members to tarfile.extractall without a filter or per-member path validation, so parent-directory names escape the upload directory. Administrator access to the backup-upload API is required, and writes are limited to filesystem locations accessible to the Fledge process.

CVSS severity4.9
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Path traversal in LF Edge Fledge 3.1.0 and earlier allows remote authenticated users to write files via a crafted backup archive. The upload_backup handler passes archive members to tarfile.extractall without a filter or per-member path validation, so parent-directory names escape the upload directory. Administrator access to the backup-upload API is required, and writes are limited to filesystem locations accessible to the Fledge process.

The record

CVE
CVE-2026-71283
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
Fledge IoT
Product
Fledge
Classifications
CWE-22, T1105
Attack vector
network
Privileges
admin

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=0 <=3.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Fledge IoT · Fledgeversion=0 <=3.1.0

Published CVSS scores

4.9TuranSecCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A: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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1105Ingress Tool Transfer

Public exploit references

No public exploit references are available in this record.

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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