CVE-2026-39424

Katalog CVE

CVSS 4.7 · Medium EPSS 0,45%

Kerentanan Improper Neutralization of Formula Elements in a CSV File pada maxkb. Skor CVSS 3.1 4.7 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

14 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

4.7 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-1236: Improper Neutralization of Formula Elements in a CSV File

EPSS (30 hari)

0,45% peluang dieksploitasi; lebih tinggi dari 37,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-rr4r-7cj2-29vp advisory vendor
• https://github.com/1Panel-dev/MaxKB/commit/24cd68acae5f726eed828e2ac801827a2a70536f patch
• https://github.com/1Panel-dev/MaxKB/releases/tag/v2.8.0 release notes