CVE-2026-28509

published 2026-03-06

CVE-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…

Priority P4 24 medium 5.4 CVSS 3.1

AV N AC L PR L UI R S C C L I L A N

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

2 ranges

Vendor	Product	Version range	Fixed in
langbot-app	langbot	< 4.8.7	4.8.7
langbot	langbot	< 4.8.7	4.8.7

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CWE-79