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CVE-2026-45087— Dalfox: Unauthenticated Remote Code Execution via `found-action` in Dalfox Server Mode

CVSS 10.0 · Critical EPSS 0.05% · P15

Affected Version Matrix 1

VendorProductVersion RangeStatus
hahwuldalfox< 2.13.0affected
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I. Basic Information for CVE-2026-45087

Vulnerability Information
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Vulnerability Title
Dalfox: Unauthenticated Remote Code Execution via `found-action` in Dalfox Server Mode
Source: NVD (National Vulnerability Database)
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
系统设置或配置在外部可控制
Source: NVD (National Vulnerability Database)
Vulnerability Title
dalfox 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
dalfox是HAHWUL个人开发者的一款自动化跨站脚本扫描工具。 Dalfox 2.13.0之前版本存在访问控制错误漏洞，该漏洞源于REST API服务器模式默认绑定到0.0.0.0:6664且无需API密钥，且model.Options中的FoundAction和FoundActionShell字段直接从攻击者提供的JSON反序列化，可能导致未认证的调用者执行任意shell命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
hahwuldalfox < 2.13.0 -

II. Public POCs for CVE-2026-45087

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III. Intelligence Information for CVE-2026-45087

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Patches & Fixes for CVE-2026-45087 (1)

Vendor Advisories for CVE-2026-45087 (1)

Same Patch Batch · hahwul · 2026-05-27 · 4 CVEs total

CVE-2026-450898.2 HIGHDalfox: Unauthenticated Arbitrary File Create/Append via `output` Option in Dalfox Server
CVE-2026-450907.5 HIGHDalfox: Unauthenticated Remote DoS via Closed-Channel Write in `ParameterAnalysis` (server
CVE-2026-450887.5 HIGHDalfox: Unauthenticated Arbitrary File Read with Out-of-Band Exfiltration via `custom-payl

IV. Related Vulnerabilities

Same product: dalfox
Same vendor: hahwul
Same weakness: CWE-15

V. Comments for CVE-2026-45087

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