{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-28509", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-02-27T20:57:47.709Z", "datePublished": "2026-03-06T04:16:58.761Z", "dateUpdated": "2026-03-06T04:16:58.761Z"}, "containers": {"cna": {"title": "LangBot has a Cross Site Scripting(XSS) Vulnerability", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "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"}}], "references": [{"name": "https://github.com/langbot-app/LangBot/security/advisories/GHSA-w8gq-g4pc-xh3h", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/langbot-app/LangBot/security/advisories/GHSA-w8gq-g4pc-xh3h"}, {"name": "https://github.com/langbot-app/LangBot/commit/614621ab7b84fe50da3c6137705cde5a99429866", "tags": ["x_refsource_MISC"], "url": "https://github.com/langbot-app/LangBot/commit/614621ab7b84fe50da3c6137705cde5a99429866"}], "affected": [{"vendor": "langbot-app", "product": "LangBot", "versions": [{"version": "< 4.8.7", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-06T04:16:58.761Z"}, "descriptions": [{"lang": "en", "value": "LangBot is a global IM bot platform designed for LLMs. Prior to version 4.8.7, LangBot\u2019s 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."}], "source": {"advisory": "GHSA-w8gq-g4pc-xh3h", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "LangBot is a global IM bot platform designed for LLMs. Prior to version 4.8.7, LangBot\u2019s 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."}], "id": "CVE-2026-28509", "lastModified": "2026-03-06T05:16:35.590", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 2.1, "impactScore": 4.2, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-03-06T05:16:35.590", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/langbot-app/LangBot/commit/614621ab7b84fe50da3c6137705cde5a99429866"}, {"source": "security-advisories@github.com", "url": "https://github.com/langbot-app/LangBot/security/advisories/GHSA-w8gq-g4pc-xh3h"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}