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CVE-2026-75856— CodeWhale before 0.8.64 SSRF Bypass via DNS Pinning TOCTOU

Quick assessment

Affected
Hmbown CodeWhale
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.

Hunter Bown CodeWhale是Hunter Bown个人开发者的一个开源编程智能体。 Hunter Bown CodeWhale 0.8.64之前版本存在服务端请求伪造漏洞，该漏洞源于DNS固定逻辑未能阻止时间检查与使用时间攻击，攻击者可通过操纵DNS响应使初始解析检查失败并在二次请求时成功，允许请求内部IP地址并绕过服务端请求伪造缓解措施。

CVSS 8.6 · High EPSS 0.37% · P30

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 8

VendorProduct Version RangeStatus
Hmbown CodeWhale 0.8.5< 0.8.41 affected
0.8.41 unaffected
0.8.5< 0.8.41 affected
0.8.41 unaffected
0.8.41< 0.8.64 affected
0.8.64 unaffected
0.8.41< 0.8.64 affected
0.8.64 unaffected
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I. Basic Information for CVE-2026-75856

Vulnerability Information
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Vulnerability Title
CodeWhale before 0.8.64 SSRF Bypass via DNS Pinning TOCTOU
Source: CVE Program / CVE List V5
Vulnerability Description
CodeWhale before 0.8.64 contains a server-side request forgery bypass vulnerability in DNS pinning logic that fails to prevent time-of-check-time-of-use attacks. Attackers can manipulate DNS responses to fail initial resolution checks and succeed on secondary requests, allowing requests to internal IP addresses and bypassing SSRF mitigations.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Hunter Bown CodeWhale 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hunter Bown CodeWhale是Hunter Bown个人开发者的一个开源编程智能体。 Hunter Bown CodeWhale 0.8.64之前版本存在服务端请求伪造漏洞，该漏洞源于DNS固定逻辑未能阻止时间检查与使用时间攻击，攻击者可通过操纵DNS响应使初始解析检查失败并在二次请求时成功，允许请求内部IP地址并绕过服务端请求伪造缓解措施。
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
Hmbown CodeWhale 0.8.5 ~ 0.8.41 -
Hmbown CodeWhale 0.8.5 ~ 0.8.41 -
Hmbown CodeWhale 0.8.41 ~ 0.8.64 -
Hmbown CodeWhale 0.8.41 ~ 0.8.64 -

II. Public POCs for CVE-2026-75856

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 9281 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-2026-75856

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Patches & Fixes for CVE-2026-75856 (1)

Vendor Advisories for CVE-2026-75856 (2)

Same Patch Batch · Hmbown · 2026-08-18 · 9 CVEs total

CVE-2026-75913 9.3 CRITICAL CodeWhale before 0.8.64 Argument Injection via git_show
CVE-2026-75858 7.8 HIGH CodeWhale rlm_eval before 0.8.64 Remote Code Execution
CVE-2026-75911 7.8 HIGH CodeWhale before 0.8.64 Remote Code Execution via allow_shell
CVE-2026-75915 7.5 HIGH CodeWhale before 0.8.64 Environment Variable Leak via js_execution
CVE-2026-75914 7.5 HIGH CodeWhale before 0.8.64 Path Traversal via image_analyze symlink
CVE-2026-75859 7.5 HIGH CodeWhale before 0.8.64 Arbitrary File Read via instructions
CVE-2026-75912 7.4 HIGH CodeWhale before 0.8.64 Argument Injection via git_blame
CVE-2026-75857 7.0 HIGH CodeWhale before 0.8.64 Privilege Escalation via exec_shell_interact

IV. Related Vulnerabilities

Same product: CodeWhale
Same vendor: Hmbown
Same weakness: CWE-918

V. Comments for CVE-2026-75856

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