pemarine

GitHub · Repository owner · Source ID 152866198
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Source-scoped identity with 1 associated PoC and 1 linked vulnerability.

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GitHub

pemarine/cve-2026-41940-PoC

Repository PoC0Created 2026-08-13StubCVE-2026-419403 files

17.2 KiB

GitHubPoC details
AnalysisTrojan behaviordeepseek-v4-pro:cloud ·

Technical assessment

The repository claims to be a PoC for CVE-2026-41940 (cPanel/WHM auth bypass) but contains no exploit logic. The main script (cve.py) is a WSUS exploit simulator with only time.sleep calls and no network requests. The support module (exp.py) is a Windows-only PE mapper that fetches remote modules, unrelated to cPanel. The README describes cPanel exploitation but the code does not implement it.

Backdoor review

Trojan behavior

The repository claims to be a PoC for CVE-2026-41940, a cPanel/WHM authentication bypass. However, the main entry point `cve.py` does not contain any exploit code for this CVE. Instead, it imports and immediately executes `exp.run_sync()`, which connects to a hardcoded remote server (payload withheld:8765) to download and execute arbitrary, uninspected Python modules (`pe_core.py`, `manual_mapper.py`) in memory. This concealed, unrelated remote access trojan is materially misrepresented as a cPanel exploit.

ClassificationStub
Model confidence95%
AuthenticationNot required
LanguagesPython
Target softwarecPanelWHM
Attack typesauthentication_bypass
Evidence & reasoningClassification basis · observed behavior · safety review
Technical evidence

Classification basis and observed behavior

Classification basis

The artifact is a stub because the code does not implement the claimed cPanel/WHM authentication bypass. cve.py contains only placeholder simulation logic (time.sleep, print) and no actual exploit or scanner functionality. exp.py is an unrelated PE mapper. The README describes exploitation but the code is materially incomplete.

cve.py:13-145exp.py:1-225

Requirements

  • The README claims the tool exploits CVE-2026-41940 via CRLF injection in the Authorization header, but the code does not implement this.README.md:5

Observed behavior

  • cve.py defines a WSUSExploit class that simulates a WSUS attack using only time.sleep and print statements; it makes no HTTP requests and does not interact with cPanel/WHM.cve.py:13-145
  • exp.py is a Windows-only PE mapper client that downloads and executes remote modules from a hardcoded server; it is unrelated to cPanel/WHM exploitation.exp.py:1-225
Safety-review evidence

Behaviors behind the backdoor verdict

Flagged behaviors

Concealed Remote Code Execution
  • The main entry point `cve.py` imports `exp` and calls `exp.run_sync(FORCE_SYNC=True)` on line 11. The `exp.py` module contains a hardcoded configuration (lines 16-28) pointing to a remote server at `payload withheld:8765`. The `run_sync` function (line 125) calls `bootstrap`, which downloads Python modules `pe_core.py` and `manual_mapper.py` from this server and executes them in memory using `exec(compile(data, name, "exec"), module.__dict__)` (line 91). This behavior is completely unrelated to the claimed CVE-2026-41940 cPanel exploit and is not disclosed in the README.cve.py:3cve.py:11exp.py:16-28exp.py:125-138exp.py:84-91
Material Misrepresentation
  • The README.md file describes the tool as an exploit for CVE-2026-41940, a cPanel/WHM authentication bypass, and provides usage examples for scanning and post-exploitation. The actual code in `cve.py` is a completely unrelated WSUS exploit simulation that does not implement any of the described cPanel functionality. The `cve.py` script's `main` function parses arguments for a WSUS target, not a cPanel URL. The real malicious behavior is hidden in the imported `exp` module.README.md:1-5README.md:37-44cve.py:13cve.py:148-160

Observables

Ipv4
Payload withheldHardcoded remote server IP address in exp.py from which additional Python modules are downloaded and executed in memory.exp.py:17
Url
Payload withheldConstructed sync URL used to bootstrap the download of remote payloads.exp.py:35-36
Behavior
Payload withheldThe bootstrap function downloads Python modules from a remote server and executes them directly in memory without writing to disk, evading simple file-based detection.exp.py:84-91
Review boundaries

What the analysis did not establish

  • Evidence is limited to the three text files in the repository snapshot; no runtime behavior or external dependencies were observed.
  • The repository may be a decoy or placeholder; the actual exploit logic is absent from the provided code.
  • The actual payloads downloaded from the remote server (pe_core.py, manual_mapper.py) are not included in the evidence and were not reviewed. Their specific harmful actions are unknown, but the mechanism for concealed remote code execution is fully established.
Model interpretation

This review is limited to the supplied PoC code and context. It does not assert that the code works or is safe to execute.