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CVE-2026-45088— Dalfox: Unauthenticated Arbitrary File Read with Out-of-Band Exfiltration via `custom-payload-file` in Dalfox Server Mode

Quick assessment

Affected
hahwul dalfox
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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之前版本存在安全漏洞，该漏洞源于REST API服务器模式中custom-payload-file字段直接从攻击者请求体反序列化并传播到扫描引擎，可能导致未认证的网络攻击者通过扫描流量逐行读取任意文件内容。

CVSS 7.5 · High EPSS 0.25% · P16

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 1

VendorProduct Version RangeStatus
hahwul dalfox < 2.13.0 affected
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I. Basic Information for CVE-2026-45088

Vulnerability Information
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Vulnerability Title
Dalfox: Unauthenticated Arbitrary File Read with Out-of-Band Exfiltration via `custom-payload-file` in Dalfox Server Mode
Source: CVE Program / CVE List V5
Vulnerability Description
Dalfox is a powerful open-source XSS scanner and utility focused on automation. Prior to 2.13.0, when dalfox is run in REST API server mode, the custom-payload-file field in model.Options is JSON-tagged and deserialized directly from the attacker's request body, then propagated unchanged through dalfox.Initialize into the scan engine. The engine passes the value to voltFile.ReadLinesOrLiteral, which reads lines from any file path accessible to the dalfox process and embeds each line as an XSS payload in outbound HTTP requests directed at the attacker-controlled target URL. Because the server has no API key by default, an unauthenticated network attacker can exfiltrate the contents of arbitrary files on the dalfox host by reading them line-by-line through scan traffic. This vulnerability is fixed in 2.13.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
文件名或路径的外部可控制
Source: CVE Program / CVE List V5
Vulnerability Title
dalfox 安全漏洞
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之前版本存在安全漏洞，该漏洞源于REST API服务器模式中custom-payload-file字段直接从攻击者请求体反序列化并传播到扫描引擎，可能导致未认证的网络攻击者通过扫描流量逐行读取任意文件内容。
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

Vendor Product Affected Versions CPE Subscribe
hahwul dalfox < 2.13.0 -

II. Public POCs for CVE-2026-45088

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6434 chars
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III. Intelligence Information for CVE-2026-45088

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Patches & Fixes for CVE-2026-45088 (1)

Vendor Advisories for CVE-2026-45088 (1)

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

CVE-2026-45087 10.0 CRITICAL Dalfox: Unauthenticated Remote Code Execution via `found-action` in Dalfox Server Mode
CVE-2026-45089 8.2 HIGH Dalfox: Unauthenticated Arbitrary File Create/Append via `output` Option in Dalfox Server
CVE-2026-45090 7.5 HIGH Dalfox: Unauthenticated Remote DoS via Closed-Channel Write in `ParameterAnalysis` (server

IV. Related Vulnerabilities

Same product: dalfox
Same vendor: hahwul
Same weakness: CWE-73

V. Comments for CVE-2026-45088

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