hahwul dalfox up to 2.12.x REST API Server Mode /scan external control of setting

Summaryinfo

A vulnerability was found in hahwul dalfox up to 2.12.x. It has been classified as critical. The impacted element is an unknown function of the file /scan of the component REST API Server Mode. Performing a manipulation results in external control of setting. This vulnerability was named CVE-2026-45087. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in hahwul dalfox up to 2.12.x. This affects an unknown code block of the file /scan of the component REST API Server Mode. The manipulation with an unknown input leads to a external control of setting vulnerability. CWE is classifying the issue as CWE-15. One or more system settings or configuration elements can be externally controlled by a user. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Dalfox is a powerful open-source XSS scanner and utility focused on automation. Prior to 2.13.0, when dalfox is started in REST API server mode (dalfox server), the server binds to 0.0.0.0:6664 by default and requires no API key unless the operator explicitly passes --api-key. Because model.Options — including FoundAction and FoundActionShell — is deserialized directly from attacker-supplied JSON in POST /scan, and because dalfox.Initialize explicitly propagates those two fields into the final scan options without stripping them, any unauthenticated caller who can reach the server port can supply an arbitrary shell command that the dalfox process will execute on the host whenever a scan finding is triggered. This vulnerability is fixed in 2.13.0.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-45087 since 05/08/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 2.13.0 eliminates this vulnerability. The upgrade is hosted for download at github.com.

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Productinfo

Vendor

• hahwul

Name

• dalfox

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12

Website

• Product: https://github.com/hahwul/dalfox/

CPE 2.3info

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CPE 2.2info

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