CVE-2026-3839Network attack vector

Authentication bypass via unvalidated request path

Published Mar 13, 2026 · Updated Mar 13, 2026

Path traversal in auth-request.php in Lime Technology Unraid OS 7.2.3 allows remote attackers to bypass authentication via a crafted path. The authentication request handler uses a user-supplied path in authentication processing without validating that it remains within the intended location. No credentials or user interaction are required; ZDI has not disclosed which authenticated functions become reachable after bypass.

CVSS severity7.3
High
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in auth-request.php in Lime Technology Unraid OS 7.2.3 allows remote attackers to bypass authentication via a crafted path. The authentication request handler uses a user-supplied path in authentication processing without validating that it remains within the intended location. No credentials or user interaction are required; ZDI has not disclosed which authenticated functions become reachable after bypass.

The record

CVE
CVE-2026-3839
Published
Mar 13, 2026
Updated
Mar 13, 2026
Vendor
Lime Technology, Inc.
Product
Unraid OS
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 13, 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=7.2.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Lime Technology, Inc. · Unraid OSversion=7.2.3

Published CVSS scores

7.3Zero Day InitiativeCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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