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CVE-2026-64619— FileCodeBox < 2.4 Anti-bruteforce Rate Limit Bypass via Spoofed Headers

Quick assessment

Affected
vastsa FileCodeBox
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.

Lan FileCodeBox是Lan个人开发者的一款匿名文件分享工具。 Lan FileCodeBox 2.4之前版本存在信任管理问题漏洞，该漏洞源于IPRateLimit类中存在速率限制绕过，允许未经身份验证的攻击者通过提供攻击者控制的X-Real-IP和X-Forwarded-For标头绕过请求限制，可能枚举所有共享代码并无身份验证地检索其他用户的文件。

CVSS 7.5 · High EPSS 0.29% · P20

Affected Version Matrix 1

VendorProduct Version RangeStatus
vastsa FileCodeBox < 2.4 affected
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I. Basic Information for CVE-2026-64619

Vulnerability Information
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Vulnerability Title
FileCodeBox < 2.4 Anti-bruteforce Rate Limit Bypass via Spoofed Headers
Source: CVE Program / CVE List V5
Vulnerability Description
FileCodeBox before 2.4 contains a rate-limit bypass vulnerability in the IPRateLimit class that allows unauthenticated attackers to circumvent request throttling by supplying attacker-controlled X-Real-IP and X-Forwarded-For headers without verification of trusted reverse proxy origin. Attackers can supply unique spoofed IP values on each request to enumerate all possible share codes and retrieve other users' files without authentication.
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
使用不可信的源
Source: CVE Program / CVE List V5
Vulnerability Title
Lan FileCodeBox 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Lan FileCodeBox是Lan个人开发者的一款匿名文件分享工具。 Lan FileCodeBox 2.4之前版本存在信任管理问题漏洞，该漏洞源于IPRateLimit类中存在速率限制绕过，允许未经身份验证的攻击者通过提供攻击者控制的X-Real-IP和X-Forwarded-For标头绕过请求限制，可能枚举所有共享代码并无身份验证地检索其他用户的文件。
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
vastsa FileCodeBox 0 ~ 2.4 -

II. Public POCs for CVE-2026-64619

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 15634 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-64619

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Patches & Fixes for CVE-2026-64619 (1)

Vendor Advisories for CVE-2026-64619 (1)

Exploits & Public PoCs for CVE-2026-64619 (1)

Vendor Pages for CVE-2026-64619 (1)

IV. Related Vulnerabilities

Same product: FileCodeBox
Same vendor: vastsa
Same weakness: CWE-348

V. Comments for CVE-2026-64619

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