CVE-2026-28509

LangBot’s web UI prior to version 4.8.7 renders user-supplied raw HTML via rehypeRaw, resulting in a cross-site scripting (XSS) vulnerability. Affected product: LangBot (global IM bot platform for LLMs). Root cause: unescaped user HTML processed by rehypeRaw. Impact (per CVSS): Confidentiality im...