CVE-2026-39424

Published: Apr 14, 2026 Last Modified: Apr 14, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 5,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A

Description

AI Translation Available

MaxKB is an open-source AI assistant for enterprise. In versions 2.7.1 and below, the chat export feature is vulnerable to Improper Neutralization of Formula Elements in a CSV File. When an administrator exports the application chat history to an Excel file (.xlsx) via the /admin/api/workspace/{workspace_id}/application/{application_id}/chat/export endpoint, strings starting with formula characters are written directly without proper sanitization. Opening this file in spreadsheet applications like Microsoft Excel can lead to Arbitrary Code Execution (RCE) on the administrator's workstation via Dynamic Data Exchange (DDE). The issue is a variant of CVE-2025-4546, which fixed the exact same pattern in apps/dataset/serializers/document_serializers.py but missed the application chat export sink. This issue has been fixed in version 2.8.0.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0006
Percentile
0,2th
Updated

EPSS Score Trend (Last 3 Days)

1236

Improper Neutralization of Formula Elements in a CSV File

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality
Potential Impacts:
Read Application Data Execute Unauthorized Code Or Commands
Applicable Platforms
Technologies: Other
View CWE Details
https://github.com/1Panel-dev/MaxKB/commit/24cd68acae5f726e…
https://github.com/1Panel-dev/MaxKB/commit/24cd68acae5f726eed828e2ac801827a2a70…
https://github.com/1Panel-dev/MaxKB/releases/tag/v2.8.0
https://github.com/1Panel-dev/MaxKB/releases/tag/v2.8.0
https://github.com/1Panel-dev/MaxKB/security/advisories/GHS…
https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-rr4r-7cj2-29vp