Is CVE-2026-42045 actively exploited?

No active exploitation of CVE-2026-42045 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42045 be exploited remotely?

Yes. CVE-2026-42045 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42045?

CVE-2026-42045 has a CVSS score of 6.2 (MEDIUM).

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MEDIUM

CVE-2026-42045

CWE-79Published: May 12, 2026· Updated: May 13, 2026

6.2

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.8th

Official Description

LobeHub is a work-and-lifestyle space to find, build, and collaborate with agent teammates that grow with you. Prior to 2.1.48, when LobeChat processes custom tags in the Render process of src/features/Portal/Artifacts/Body/Renderer/index.tsx, if no type match is found, it will choose to call the default method, HTMLRenderer, for HTML rendering. If an attacker can induce the LLM to output content containing malicious tags, an XSS vulnerability can be created on the client side. Additionally, Lobechat's Electron main process exposes an IPC interface called runCommand, used to invoke system commands. This interface allows arbitrary command execution and does not filter the command parameter. Therefore, if an attacker can obtain a handle to window.parent.electronAPI via XSS and call the runCommand method of the IPC, the ipcMain process can execute arbitrary system commands with the current user's privileges. This vulnerability is fixed in 2.1.48.

NVD Source

Technical Analysis

CVE-2026-42045 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 6.2.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.