fkie_cve-2026-42045

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.

GHSA-xq4x-622m-q8fq — LobeHub has a Cross-Site Scripting issue that escalates to Remote Code Execution

Affected: npm: @lobehub/lobehub

### Summary The vulnerability was automatically discovered by an ai agent and then manually verified.

LobeChat's message rendering mechanism has a stored cross-site scripting (XSS) vulnerability. Combined with the Electron main process's exposed insecure IPC interface, attackers can construct malicious payloads to achieve an attack chain from XSS to remote code execution (RCE).

The LobeChat team verified this vulnerability in lobehub v2.1.23, and it also exists in the latest version.

### Details 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.

```typescript const Renderer = memo<{ content: string; type?: string }>(({ content, type }) => { switch (type) { case 'application/lobe.artifacts.react': { return <ReactRenderer code={content} />; }

case 'image/svg+xml': { return <SVGRender content={content} />; }

case 'application/lobe.artifacts.mermaid': { return <Mermaid variant={'borderless'}>{content}</Mermaid>; }

case 'text/markdown': { return <Markdown style={{ overflow: 'auto' }}>{content}</Markdown>; }

default: { return <HTMLRenderer htmlContent={content} />; } } });

export default Renderer; ```

If an attacker can induce the LLM to output content containing malicious tags, an XSS vulnerability can be created on the client si…

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fkie_cve-2026-42045

GHSA-xq4x-622m-q8fq — LobeHub has a Cross-Site Scripting issue that escalates to Remote Code Execution