Unrated severityNVD Advisory· Published Mar 6, 2026· Updated Mar 6, 2026
LangBot has a Cross Site Scripting(XSS) Vulnerability
CVE-2026-28509
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.
Affected products
2Patches
Vulnerability mechanics
References
2- github.com/langbot-app/LangBot/commit/614621ab7b84fe50da3c6137705cde5a99429866mitrex_refsource_MISC
- github.com/langbot-app/LangBot/security/advisories/GHSA-w8gq-g4pc-xh3hmitrex_refsource_CONFIRM
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