LangBot is a global IM bot platform designed for LLMs.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Mar 6, 2026 · NIST NVD

   Detected

   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.

2. Jun 17, 2026 · NIST NVD

   Updated

   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.

Affected

• cpe langbot/langbotversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-28509

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-28509

  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.

  nvd.nist.gov

References

• Patch · github.com
• Exploit · github.com