CVE ID: CVE-2026-22793
Product: 5ire AI Assistant (Desktop Client)
Component: Markdown Renderer – ECharts Plugin
Vulnerability Type: Renderer-based Remote Code Execution
CVSS v3.1 Score: 9.6 (Critical)
Severity: Critical
Impact: Full host compromise
Exploitability: High (user interaction required)
Exploit Availability: Educational proof-of-concept scenarios are possible; no officially weaponized exploit is distributed
Patch Status: Fixed
Affected Versions: All versions prior to 0.15.3
Remediated Version: 0.15.3 and later
Overview
A critical remote code execution vulnerability was identified in the 5ire AI Assistant desktop application. The issue exists in the Markdown rendering engine, specifically within the embedded ECharts plugin used to display chart content.
Due to improper handling of untrusted chart configuration data, attacker-controlled JavaScript could be executed inside the application’s renderer process. When the renderer is allowed to communicate with privileged Electron APIs, this condition enables arbitrary operating system command execution. As a result, a successful attack could lead to complete compromise of the affected system.
Root Cause
The vulnerability was caused by unsafe evaluation of ECharts configuration objects embedded in Markdown content. ECharts supports dynamic JavaScript functions as part of chart options. In vulnerable versions of 5ire, these options were rendered without sufficient validation or sandboxing.
As a result:
- JavaScript embedded inside ECharts configuration blocks was executed directly in the renderer context.
- The renderer process had access to exposed Electron IPC or native APIs.
- This allowed JavaScript to invoke system-level functions indirectly.
This design flaw created a direct execution path from untrusted content to operating system command execution.
Attack Scenario
The vulnerability could be exploited through the following passive flow:
- A malicious ECharts chart payload is crafted with embedded JavaScript logic.
- The payload is delivered to a target user via chat messages, shared notes, Markdown files, or any feature that renders Markdown content.
- The user opens or previews the content within the vulnerable 5ire client.
- The renderer automatically processes the ECharts block.
- Embedded JavaScript executes silently.
- If privileged Electron APIs are exposed, OS commands are executed.
- System access is obtained under the user’s security context.
No security warnings are shown to the user during exploitation.
Impact
If successfully exploited, the following outcomes are possible:
- Arbitrary command execution
- Credential theft
- File system access (read/write/delete)
- Installation of persistence mechanisms
- Lateral movement within the environment
- Complete host takeover
The impact is considered critical, especially in enterprise environments where users operate with elevated privileges.
Proof-of-Concept Status
Educational proof-of-concept exploitation is technically feasible due to the simplicity of renderer-based JavaScript execution. However:
- No official exploit toolkit has been published.
- No mass exploitation has been observed.
- Exploitation requires user interaction (content rendering).
This vulnerability should still be treated as actively exploitable due to the low barrier for crafting malicious payloads.
MITRE ATT&CK Mapping
- Initial Access: User Execution (malicious content rendering)
- Execution: Exploitation for Client Execution (T1203)
- Privilege Escalation: Abuse of exposed Electron APIs
- Persistence: Startup folder or scheduled task creation (post-exploitation)
- Command and Control: Outbound connections initiated by compromised client
- Impact: Full system compromise
Detection Strategy
Recommended Log Sources
- Endpoint process creation logs (Windows Event ID 4688, Sysmon)
- Network connection logs
- Application logs from 5ire (debug or renderer logs)
- EDR telemetry
- File integrity monitoring logs
Behavioral Indicators
The following behaviors may indicate exploitation:
5ire.exespawning shell interpreters (cmd, powershell, bash)- Unexpected child processes launched shortly after rendering content
- Network connections initiated by the 5ire process to unknown destinations
- Creation of suspicious files in user profile or startup directories
- Renderer errors combined with abnormal IPC activity
Splunk Detection Rule
Detection: 5ire AI Assistant Spawning Suspicious Child Processes
index=endpoint_logs
(EventCode=4688 OR sourcetype="XmlWinEventLog:Microsoft-Windows-Sysmon/Operational")
ParentImage="*\\5ire.exe"
(
Image="*\\cmd.exe" OR
Image="*\\powershell.exe" OR
Image="*\\pwsh.exe" OR
Image="*\\bash.exe" OR
Image="*\\sh.exe" OR
Image="*\\curl.exe" OR
Image="*\\wget.exe" OR
Image="*\\nc.exe"
)
| stats count by ComputerName, ParentImage, Image, CommandLine, User
| where count > 0
Severity: High
Action: Investigate immediately, isolate host if confirmed
Optional Network-Based Detection (Splunk)
index=network_logs
process_name="5ire.exe"
dest_ip!=<known_good_ips>
| stats count by src_ip, dest_ip, dest_port, process_name
Mitigation and Remediation
Primary Recommendation
- Upgrade 5ire AI Assistant to version 0.15.3 or later using the official release.
- Official Patch / Upgrade Link:
https://github.com/nanbingxyz/5ire/releases/tag/v0.15.3
Additional Defensive Measures
- Avoid rendering untrusted Markdown content until patched.
- Ensure the application is not run with administrative privileges.
- Monitor and restrict outbound network connections from desktop applications.
- Enable strict endpoint monitoring for abnormal child process creation.
- Apply Electron hardening best practices in managed environments.
Final Takeaway
CVE-2026-22793 represents a high-risk client-side vulnerability where unsafe rendering logic led to full remote code execution. While exploitation requires user interaction, the technical barrier is low and the potential impact is severe. Immediate patching and enhanced endpoint monitoring are strongly advised.
Applying the official update fully resolves the vulnerability.
