# CVE-2026-45087

## Summary

- **CVE ID:** CVE-2026-45087
- **Severity:** CRITICAL
- **CVSS Score:** 10 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)
- **CWE:** CWE-15, CWE-78, CWE-306
- **Published:** May 27, 2026
- **Last Modified:** May 28, 2026

## 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.

## Affected Products

- hahwul — dalfox (< 2.13.0)

## References

- [CNA](https://github.com/hahwul/dalfox/security/advisories/GHSA-v25v-m36w-jp4h)
- [CNA](https://github.com/hahwul/dalfox/releases/tag/v2.13.0)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 12.96%
- **EPSS Percentile:** 96.1

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._