Authenticated arbitrary file download via path traversal
Published Jun 17, 2026 · Updated Jun 17, 2026
Path traversal in Client Portal 5.6.2 and earlier allows remote authenticated users to download arbitrary server files. Patchstack identifies the affected CP Client download capability but has not published the handler, input parameter, or faulty path-validation operation. A CP Client account is required, and successful exploitation exposes files readable by the WordPress process without enabling file modification or service interruption.
Summary
What happened
Path traversal in Client Portal 5.6.2 and earlier allows remote authenticated users to download arbitrary server files. Patchstack identifies the affected CP Client download capability but has not published the handler, input parameter, or faulty path-validation operation. A CP Client account is required, and successful exploitation exposes files readable by the WordPress process without enabling file modification or service interruption.
The record
- CVE
- CVE-2026-40724
- Published
- Jun 17, 2026
- Updated
- Jun 17, 2026
- Vendor
- Client Portal IO Ltd
- Product
- Client Portal
- Classifications
- CWE-22, CAPEC-1, T1005
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 17, 2026CVE publishedPublication date reported by the CVE source.
- Jun 17, 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.
- Affected versionversion=n/a <=5.6.2 changes=[{"at":"5.6.3","status":"unaffected"}]
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
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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