d3kc4rt1/CVE-2026-1657

GitHubRepository PoCWriteup

PoC files

1 file

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GitHub
Analysisdeepseek-v4-pro:cloud ·

Technical assessment

A technical writeup describing an unauthenticated arbitrary file upload vulnerability (CVE-2026-1657) in the EventPrime WordPress plugin. It details the root cause, provides a curl command as a proof-of-concept example, and discusses remediation.

Backdoor review

No backdoor observed in reviewed code

The artifact is a single README.md file documenting CVE-2026-1657. It contains no executable code, no concealed payload, and no instructions for the reader to perform harmful actions. The described PoC is a standard curl command demonstrating the reported vulnerability.

ClassificationWriteup
Model confidence100%
AuthenticationNot required
Languagesmarkdown
Target softwareEventPrime WordPress plugin
Attack typesunrestricted file upload
Evidence & reasoningClassification basis · observed behavior · safety review
Technical evidence

Classification basis and observed behavior

Classification basis

The artifact is a README.md file containing a detailed technical analysis of CVE-2026-1657. It includes a curl command as a PoC example, but the primary content is explanatory text describing the vulnerability, its root cause, impact, and remediation. It does not contain executable exploit or scanner code.

README.md:1-77

Requirements

  • Target running a vulnerable version of the EventPrime plugin (<= 4.2.8.1)README.md:6

Observed behavior

  • Describes the vulnerability's root cause: insecure AJAX endpoint registration, missing authorization/nonce checks, and flawed file validation.README.md:17-30
  • Provides a curl command as a proof-of-concept example to upload a file to the vulnerable endpoint.README.md:46-49
  • Discusses business impact including storage exhaustion, media library spam, and potential for further exploitation.README.md:32-35
Safety-review evidence

Behaviors behind the backdoor verdict

Observables

Documentation Only
The entire artifact is a README.md file with no source code, scripts, or binaries.No executable behavior can be present; the artifact is purely informational.README.md:1-77
Curl Command
curl -i -F "file=@poc.jpg;filename=poc.jpg" "http://TARGET_SITE/wp-admin/admin-ajax.php?action=ep_upload_file_media"The PoC command uploads a file to a target WordPress site to demonstrate the vulnerability. It does not instruct the reader to download or execute anything locally.README.md:46-49
Review boundaries

What the analysis did not establish

  • Evidence consists of a single README.md file; no executable source code is present.
  • The curl command is provided as an illustrative example within the writeup, not as a standalone functional script.
  • Only one file (README.md) was supplied; no other repository files were inspected.
  • Binary files were flagged as metadata-only and not analyzed, though none were identified in this packet.
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