CVE-2026-21628

CRITICAL

File Management Feature - Unauthenticated RCE

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 3 public exploits for CVE-2026-21628. PoCs published by adminlove520, ChiefYoru, webshellseo8.

AI-analyzed exploit summary This repository contains a functional exploit for CVE-2026-21628, targeting an unauthenticated RCE vulnerability in the Astroid Framework. The exploit leverages SVG file uploads to bypass MIME checks and achieve remote code execution.

Description

A improperly secured file management feature allows uploads of dangerous data types for unauthenticated users, leading to remote code execution.

Exploits (3)

github WORKING POC 3 stars
by adminlove520 · pythonpoc
https://github.com/adminlove520/CVE-Poc_All_in_One/tree/main/2026/CVE-2026-21628

This repository contains a functional exploit for CVE-2026-21628, targeting an unauthenticated RCE vulnerability in the Astroid Framework. The exploit leverages SVG file uploads to bypass MIME checks and achieve remote code execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Astroid Framework (v2.0.0 - v3.3.10)
No auth needed
Prerequisites: Target running vulnerable Astroid Framework · Network access to the target
mistral-large-3 · analyzed May 02, 2026 Full analysis →
github WORKING POC
by ChiefYoru · pythonpoc
https://github.com/ChiefYoru/CVE-2026-21628_PoC

This exploit targets an unauthenticated remote code execution (RCE) vulnerability in the Astroid Framework for Joomla. It abuses the media upload and rename functionality via com_ajax to upload a malicious SVG file and rename it to a PHP webshell, achieving arbitrary code execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Astroid Framework (Joomla extension), versions likely affected by CVE-2026-21628
No auth needed
Prerequisites: Target must have Astroid Framework installed and accessible · com_ajax component must be enabled · Media upload functionality must be accessible without authentication
mistral-large-3 · analyzed Jul 19, 2026 Full analysis →
nomisec WORKING POC
by webshellseo8 · poc
https://github.com/webshellseo8/CVE-2026-21628-POC

This repository contains a functional exploit for CVE-2026-21628, targeting an unauthenticated RCE vulnerability in the Astroid Framework. The exploit leverages SVG file uploads to bypass MIME checks and achieve remote code execution by uploading a malicious PHP shell.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Astroid Framework (versions 2.0.0 to 3.3.10)
No auth needed
Prerequisites: Target running vulnerable Astroid Framework · Network access to the target
mistral-large-3 · analyzed Apr 09, 2026 Full analysis →

References (1)

Core 1
Core References
Various Sources product
https://astroidframe.work

Scores

CVSS v3 9.8
EPSS 0.0047
EPSS Percentile 38.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-434
Status published
Products (1)
templaza/astroid_framework 2.0.0 - 3.3.10
Published Mar 05, 2026
Tracked Since Mar 05, 2026