Internal port probing via attacker-controlled HTTP requests
Published Jun 5, 2026 · Updated Jun 5, 2026
SSRF in linqi OnPremise before 1.4.8.6 allows remote authenticated users to probe internal ports through custom process creation. An HTTP Request component accepts an attacker-selected destination, causing the application server to issue arbitrary requests and expose Success, Failed, or 504 responses. Process-creation access is required; the response differences reveal whether internal ports are open, closed, or filtered, without direct data extraction.
Summary
What happened
SSRF in linqi OnPremise before 1.4.8.6 allows remote authenticated users to probe internal ports through custom process creation. An HTTP Request component accepts an attacker-selected destination, causing the application server to issue arbitrary requests and expose Success, Failed, or 504 responses. Process-creation access is required; the response differences reveal whether internal ports are open, closed, or filtered, without direct data extraction.
The record
- CVE
- CVE-2026-11346
- Published
- Jun 5, 2026
- Updated
- Jun 5, 2026
- Vendor
- linqi GmbH
- Product
- linqi
- Classifications
- CWE-918, CAPEC-664, T1046
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 5, 2026CVE publishedPublication date reported by the CVE source.
- Jun 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.
- Affected versionversion=0 <1.4.8.6
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
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Technologies
Your stack
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Your stack
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