CVE-2026-45087: CWE-15: External Control of System or Configuration Setting in hahwul dalfox
CVE-2026-45087 is a critical vulnerability in hahwul dalfox versions prior to 2.13.0. When running dalfox in REST API server mode, it binds to all interfaces on port 6664 by default without requiring an API key. The server deserializes attacker-controlled JSON input for scan options, including fields that allow arbitrary shell command execution on the host when a scan finding is triggered. This vulnerability allows unauthenticated remote attackers to execute arbitrary commands. The issue is fixed in version 2.13.0.
AI Analysis
Technical Summary
Dalfox is an open-source XSS scanner that, before version 2.13.0, runs a REST API server binding to 0.0.0.0:6664 without authentication by default. The server deserializes JSON POST data into scan options, including FoundAction and FoundActionShell fields, which are not sanitized. This allows unauthenticated remote attackers to supply arbitrary shell commands that dalfox executes on the host upon scan findings. The vulnerability is identified as CWE-15 (External Control of System or Configuration Setting), CWE-78 (OS Command Injection), and CWE-306 (Missing Authentication for Critical Function). It has a CVSS 3.1 score of 10.0, indicating critical severity. The vulnerability is fixed in dalfox version 2.13.0.
Potential Impact
An unauthenticated remote attacker can execute arbitrary shell commands on the host running the vulnerable dalfox REST API server. This can lead to full system compromise, including complete confidentiality, integrity, and availability loss. The vulnerability affects all dalfox versions prior to 2.13.0 when run in server mode with default settings.
Mitigation Recommendations
Upgrade dalfox to version 2.13.0 or later, where this vulnerability is fixed. Until upgrading, do not run dalfox in REST API server mode without specifying an API key and binding to a restricted interface. Restrict network access to the server port 6664 to trusted users only. Patch status is confirmed fixed in version 2.13.0.
CVE-2026-45087: CWE-15: External Control of System or Configuration Setting in hahwul dalfox
Description
CVE-2026-45087 is a critical vulnerability in hahwul dalfox versions prior to 2.13.0. When running dalfox in REST API server mode, it binds to all interfaces on port 6664 by default without requiring an API key. The server deserializes attacker-controlled JSON input for scan options, including fields that allow arbitrary shell command execution on the host when a scan finding is triggered. This vulnerability allows unauthenticated remote attackers to execute arbitrary commands. The issue is fixed in version 2.13.0.
CVSS v3.1
Score 10.0critical
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Dalfox is an open-source XSS scanner that, before version 2.13.0, runs a REST API server binding to 0.0.0.0:6664 without authentication by default. The server deserializes JSON POST data into scan options, including FoundAction and FoundActionShell fields, which are not sanitized. This allows unauthenticated remote attackers to supply arbitrary shell commands that dalfox executes on the host upon scan findings. The vulnerability is identified as CWE-15 (External Control of System or Configuration Setting), CWE-78 (OS Command Injection), and CWE-306 (Missing Authentication for Critical Function). It has a CVSS 3.1 score of 10.0, indicating critical severity. The vulnerability is fixed in dalfox version 2.13.0.
Potential Impact
An unauthenticated remote attacker can execute arbitrary shell commands on the host running the vulnerable dalfox REST API server. This can lead to full system compromise, including complete confidentiality, integrity, and availability loss. The vulnerability affects all dalfox versions prior to 2.13.0 when run in server mode with default settings.
Mitigation Recommendations
Upgrade dalfox to version 2.13.0 or later, where this vulnerability is fixed. Until upgrading, do not run dalfox in REST API server mode without specifying an API key and binding to a restricted interface. Restrict network access to the server port 6664 to trusted users only. Patch status is confirmed fixed in version 2.13.0.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-08T19:27:26.697Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a172e7fe29bf47b50d78aa8
Added to database: 05/27/2026, 17:48:47 UTC
Last enriched: 06/03/2026, 20:52:44 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 75
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