VULNERABILITY INTELLIGENCE

CVE-2026-28509

CVSS score6.3 MEDIUM

EPSS probability0.22%

CISA KEVNot currently listed

Published2026-03-06

Last modified2026-06-17

Description

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.