CVE-2026-40050Network attack vector

Unauthenticated file read via cluster API traversal

Published Apr 21, 2026 · Updated Apr 21, 2026

Path traversal in CrowdStrike Falcon LogScale Self-Hosted 1.224.0 through 1.235.0 allows remote attackers to read server files. An exposed, unauthenticated cluster API endpoint accepts crafted paths without restricting resolution to its intended directory, enabling arbitrary filesystem reads. The endpoint must be network-exposed; Next-Gen SIEM is unaffected, and the record establishes neither file writes nor code execution.

CVSS severity9.8
Critical
EPSS probability0.60%
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 CrowdStrike Falcon LogScale Self-Hosted 1.224.0 through 1.235.0 allows remote attackers to read server files. An exposed, unauthenticated cluster API endpoint accepts crafted paths without restricting resolution to its intended directory, enabling arbitrary filesystem reads. The endpoint must be network-exposed; Next-Gen SIEM is unaffected, and the record establishes neither file writes nor code execution.

The record

CVE
CVE-2026-40050
Published
Apr 21, 2026
Updated
Apr 21, 2026
Vendor
CrowdStrike
Product
CrowdStrike Falcon LogScale Self-Hosted
Classifications
CWE-22, CWE-306, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 21, 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=1.224.0 <=1.235.0 changes=[{"at":"1.233.1, 1.234.1, 1.235.1, 1.228.2","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CrowdStrike · CrowdStrike Falcon LogScale Self-Hostedversion=1.224.0 <=1.235.0 changes=[{"at":"1.233.1, 1.234.1, 1.235.1, 1.228.2","status":"unaffected"}]

Published CVSS scores

9.8CrowdStrike Holdings, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-306Missing Authentication for Critical Function
T1005Data from Local System

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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