liqiang-fit2cloud

7 exploits Active since Sep 2023
CVE-2026-39418 WRITEUP MEDIUM WRITEUP
MaxKB: SSRF via sandbox network hook bypass
MaxKB is an open-source AI assistant for enterprise. In versions 2.7.1 and below, sandbox network protection can be bypassed by using socket.sendto() with the MSG_FASTOPEN flag. This allows authenticated user with tool-editing permissions to reach internal services that are explicitly blocked by the sandbox's banned hosts configuration. MaxKB's sandbox uses LD_PRELOAD to hook the connect() function and block connections to banned IPs, but Linux's sendto() with the MSG_FASTOPEN flag can establish TCP connections directly through the kernel without ever calling connect(), completely bypassing the IP validation. Although sendto is listed in the syscall() wrapper, this is ineffective because glibc invokes the kernel syscall directly rather than routing through the hooked syscall() function. This issue has been fixed in version 2.8.0.
CVSS 5.0
CVE-2026-39419 WRITEUP LOW WRITEUP
MaxKB: Sandbox Result Validation Bypass via Tool Output Spoofing
MaxKB is an open-source AI assistant for enterprise. In versions 2.7.1 and below, an authenticated user can bypass sandbox result validation and spoof tool execution results by exploiting Python frame introspection to read the wrapper's UUID from its bytecode constants, then writing a forged result directly to file descriptor 1 (bypassing stdout redirection). By calling sys.exit(0), the attacker terminates the wrapper before it prints the legitimate output, causing the MaxKB service to parse and trust the spoofed response as the genuine tool result. This issue has been fixed in version 2.8.0.
CVSS 3.1
CVE-2026-39420 WRITEUP MEDIUM WRITEUP
MaxKB: Sandbox escape via LD_PRELOAD bypass
MaxKB is an open-source AI assistant for enterprise. In versions 2.7.1 and below, an incomplete sandbox protection mechanism allows an authenticated user with tool execution privileges to escape the LD_PRELOAD-based sandbox. By env command the attacker can clear the environment variables and drop the sandbox.so hook, leading to unrestricted Remote Code Execution (RCE) and network access. MaxKB restricts untrusted Python code execution via the Tool Debug API by injecting sandbox.so through the LD_PRELOAD environment variable. This intercepts sensitive C library functions (like execve, socket, open) to restrict network and file access. However, a patch allowed the /usr/bin/env utility to be executed by the sandboxed user. When an attacker is permitted to create subprocesses, they can execute the env -i python command. The -i flag instructs env to completely clear all environment variables before running the target program. This effectively drops the LD_PRELOAD environment variable. The newly spawned Python process will therefore execute natively without any sandbox hooks, bypassing all network and file system restrictions. This issue has been fixed in version 2.8.0.
CVSS 6.3
CVE-2026-39421 WRITEUP MEDIUM WRITEUP
MaxKB: Sandbox escape via ctypes and unhooked SYS_pkey_mprotect
MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain a sandbox escape vulnerability in the ToolExecutor component. By leveraging Python's ctypes library to execute raw system calls, an authenticated attacker with workspace privileges can bypass the LD_PRELOAD-based sandbox.so module to achieve arbitrary code execution via direct kernel system calls, enabling full network exfiltration and container compromise. The library intercepts critical standard system functions such as execve, system, connect, and open. It also intercepts mprotect to prevent PROT_EXEC (executable memory) allocations within the sandboxed Python processes, but pkey_mprotect is not blocked. This issue has been fixed in version 2.8.0.
CVSS 6.3
CVE-2023-41878 WRITEUP MEDIUM WRITEUP
MeterSphere < 2.10.7 - Use of Hard-coded Credentials in Selenium VNC Config
MeterSphere is a one-stop open source continuous testing platform, covering functions such as test tracking, interface testing, UI testing and performance testing. The Selenium VNC config used in Metersphere is using a weak password by default, attackers can login to vnc and obtain high permissions. This issue has been addressed in version 2.10.7 LTS. Users are advised to upgrade. There are no known workarounds for this vulnerability.
CVSS 4.6
CVE-2025-32383 WRITEUP MEDIUM WRITEUP
maxkb < 1.10.4 - Authenticated Remote Code Execution via Function Library Module
MaxKB (Max Knowledge Base) is an open source knowledge base question-answering system based on a large language model and retrieval-augmented generation (RAG). A reverse shell vulnerability exists in the module of function library. The vulnerability allow privileged‌ users to create a reverse shell. This vulnerability is fixed in v1.10.4-lts.
CVSS 4.3
CVE-2025-66419 WRITEUP HIGH WRITEUP
MaxKB <2.4.0 - Privilege Escalation
MaxKB is an open-source AI assistant for enterprise. In versions 2.3.1 and below, the tool module allows an attacker to escape the sandbox environment and escalate privileges under certain concurrent conditions. This issue is fixed in version 2.4.0.
CVSS 8.8