webshellseo8/CVE-2026-48907-Unauthenticated-RCE-in-JCE

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GitHub
Analysisdeepseek-v4-pro:cloud ·

Technical assessment

A Python mass scanner that checks for CVE-2026-48907 in JCE Joomla by attempting to create a profile, upload a PHP webshell, and verify remote code execution via an HTTP request. It saves only confirmed vulnerable URLs.

Backdoor review

No backdoor observed in reviewed code

The PoC is a mass scanner for CVE-2026-48907 that uploads PHP webshells to vulnerable Joomla JCE targets. All payloads are standard PHP backticks or system() calls consistent with the stated RCE exploit. No concealed operator-directed harm, credential theft, persistence, or unrelated payloads were observed.

ClassificationScanner
Model confidence98%
AuthenticationNot required
LanguagesPython
Target softwareJoomla Content Editor (JCE) extension for Joomla
Attack typesRemote Code ExecutionCode InjectionImproper Access Control
Evidence & reasoningClassification basis · observed behavior · safety review
Technical evidence

Classification basis and observed behavior

Classification basis

The script is described as a 'Mass Scanner' in its docstring and banner. It checks for the vulnerability by attempting exploitation steps (profile import, upload, rename) but its primary stated purpose is to detect and report vulnerable targets, saving only confirmed RCE URLs. It does not provide an interactive shell or post-exploitation capabilities; it validates the vulnerability and exits.

CVE-2026-48907.py:3CVE-2026-48907.py:9CVE-2026-48907.py:230CVE-2026-48907.py:249

Requirements

  • Target must have JCE extension installed and accessible.CVE-2026-48907.py:84-91
  • Target must expose the JCE proxy endpoint.CVE-2026-48907.py:93-95
  • Target must provide a CSRF token in the homepage or a form.CVE-2026-48907.py:97-104

Observed behavior

  • Checks for JCE presence by requesting known plugin paths and looking for version XML.CVE-2026-48907.py:25-30CVE-2026-48907.py:84-91
  • Imports a malicious JCE profile via XML upload to enable file upload and rename features.CVE-2026-48907.py:106-132
  • Uploads PHP payloads directly as .php files and verifies execution by requesting the file with a command parameter.CVE-2026-48907.py:159-175
  • Uploads GIF payloads as .gif files, then renames them to .php via JSON-RPC and verifies execution.CVE-2026-48907.py:177-198
  • Saves confirmed RCE URLs to an output file.CVE-2026-48907.py:59-64CVE-2026-48907.py:216-218
Safety-review evidence

Behaviors behind the backdoor verdict

Observables

Webshell Payload
<?=`$_GET[x]`?>Standard PHP backtick webshell used to demonstrate RCE on the target.CVE-2026-48907.py:33
Output File
webshell.txtFile where confirmed RCE URLs are saved; consistent with scanner output.CVE-2026-48907.py:22
Contact Info
Telegram: https://t.me/WebshellSRAuthor contact information; not a backdoor indicator.CVE-2026-48907.py:7
Review boundaries

What the analysis did not establish

  • Evidence is limited to the supplied source code; no runtime behavior or network traffic was observed.
  • The artifact is self-described as a PoC and scanner, but classification is based solely on its code and documentation.
  • Only the two text files (CVE-2026-48907.py and README.md) were reviewed; no binary or other files were present in the artifact.
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.

Linked vulnerabilities

1