Vulnerability Description
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.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/hahwul/dalfox/releases/tag/v2.13.0
- https://github.com/hahwul/dalfox/security/advisories/GHSA-v25v-m36w-jp4h
- https://github.com/hahwul/dalfox/security/advisories/GHSA-v25v-m36w-jp4h
FAQ
What is CVE-2026-45087?
CVE-2026-45087 is a vulnerability with a CVSS score of 10.0 (CRITICAL). 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 def...
How severe is CVE-2026-45087?
CVE-2026-45087 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-45087?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.