langbot-app vulnerabilities

Products

• LangBot 3

Latest langbot-app CVEs

Newest publication first

1. CVE-2026-54449 LangBot: Authenticated RCE Via MCP Configuration

   Published 2026-08-20

   High·CVSS 8.8 EPSS 0.72%

   LangBot is a global IM bot platform designed for LLMs. In version 4.10.7 and earlier, any authenticated user can add or change an STDIO MCP server configuration without an adequate authorization boundary. In src/langbot/pkg/provider/tools/loaders/mcp.py, StdioServerParameters acc...

2. CVE-2026-28509 LangBot has a Cross Site Scripting(XSS) Vulnerability

   Published 2026-03-06

   Medium·CVSS 5.4 EPSS 0.22%

   LangBot is a global IM bot platform designed for LLMs. Prior to version 4.8.7, LangBot’s web UI renders user-supplied raw HTML using rehypeRaw, which can lead to a cross-site scripting (XSS) vulnerability. This issue has been patched in version 4.8.7.

3. CVE-2025-59835 LangBot has a cross-directory file upload vulnerability, which could lead to system takeover

   Published 2025-10-02

   High·CVSS 8.6 EPSS 0.42%

   LangBot is a global IM bot platform designed for LLMs. In versions 4.1.0 up to but not including 4.3.5, authorized attackers can exploit the /api/v1/files/documents interface to perform arbitrary file uploads. Since this interface does not strictly restrict the storage directory...

Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.