{"id":"CVE-2026-28509","state":"PUBLISHED","title":"LangBot has a Cross Site Scripting(XSS) Vulnerability","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.","publishedAt":"2026-03-06T04:16:58.761Z","updatedAt":"2026-03-06T16:07:49.499Z","severity":{"score":6.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["langbot-app LangBot"],"affected":[{"vendor":"langbot-app","product":"LangBot","versions":[{"version":"< 4.8.7","status":"affected"}]}],"references":["https://github.com/langbot-app/LangBot/security/advisories/GHSA-w8gq-g4pc-xh3h","https://github.com/langbot-app/LangBot/commit/614621ab7b84fe50da3c6137705cde5a99429866"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/28xxx/CVE-2026-28509.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-28509","state":"PUBLISHED","datePublished":"2026-03-06T04:16:58.761Z","dateUpdated":"2026-03-06T16:07:49.499Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-02-27T20:57:47.709Z"},"containers":{"cna":{"title":"LangBot has a Cross Site Scripting(XSS) Vulnerability","descriptions":[{"lang":"en","value":"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":[{"vendor":"langbot-app","product":"LangBot","versions":[{"version":"< 4.8.7","status":"affected"}]}],"references":[{"url":"https://github.com/langbot-app/LangBot/security/advisories/GHSA-w8gq-g4pc-xh3h","name":"https://github.com/langbot-app/LangBot/security/advisories/GHSA-w8gq-g4pc-xh3h","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/langbot-app/LangBot/commit/614621ab7b84fe50da3c6137705cde5a99429866","name":"https://github.com/langbot-app/LangBot/commit/614621ab7b84fe50da3c6137705cde5a99429866","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.3,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-03-06T04:16:58.761Z"},"source":{"advisory":"GHSA-w8gq-g4pc-xh3h","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-06T15:50:37.548729Z","id":"CVE-2026-28509","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-06T16:07:49.499Z"}}]}}}