{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-39411", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-07T00:23:30.595Z", "datePublished": "2026-04-08T19:37:43.814Z", "dateUpdated": "2026-04-08T20:15:22.363Z"}, "containers": {"cna": {"title": "LobeHub has an unauthenticated authentication bypass on `webapi` routes via forgeable `X-lobe-chat-auth` header", "problemTypes": [{"descriptions": [{"cweId": "CWE-287", "lang": "en", "description": "CWE-287: Improper Authentication", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-290", "lang": "en", "description": "CWE-290: Authentication Bypass by Spoofing", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-345", "lang": "en", "description": "CWE-345: Insufficient Verification of Data Authenticity", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/lobehub/lobehub/security/advisories/GHSA-5mwj-v5jw-5c97", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/lobehub/lobehub/security/advisories/GHSA-5mwj-v5jw-5c97"}, {"name": "https://github.com/lobehub/lobehub/pull/13535", "tags": ["x_refsource_MISC"], "url": "https://github.com/lobehub/lobehub/pull/13535"}, {"name": "https://github.com/lobehub/lobehub/commit/3327b293d66c013f076cbc16cdbd05a61a3d0428", "tags": ["x_refsource_MISC"], "url": "https://github.com/lobehub/lobehub/commit/3327b293d66c013f076cbc16cdbd05a61a3d0428"}, {"name": "https://github.com/lobehub/lobehub/releases/tag/v2.1.48", "tags": ["x_refsource_MISC"], "url": "https://github.com/lobehub/lobehub/releases/tag/v2.1.48"}], "affected": [{"vendor": "lobehub", "product": "lobehub", "versions": [{"version": "< 2.1.48", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-08T19:37:43.814Z"}, "descriptions": [{"lang": "en", "value": "LobeHub is a work-and-lifestyle space to find, build, and collaborate with agent teammates that grow with you. Prior to 2.1.48, the webapi authentication layer trusts a client-controlled X-lobe-chat-auth header that is only XOR-obfuscated, not signed or otherwise authenticated. Because the XOR key is hardcoded in the repository, an attacker can forge arbitrary auth payloads and bypass authentication on protected webapi routes. Affected routes include /webapi/chat/[provider], /webapi/models/[provider], /webapi/models/[provider]/pull, and /webapi/create-image/comfyui. This vulnerability is fixed in 2.1.48."}], "source": {"advisory": "GHSA-5mwj-v5jw-5c97", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/lobehub/lobehub/security/advisories/GHSA-5mwj-v5jw-5c97", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-08T20:14:34.481380Z", "id": "CVE-2026-39411", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-08T20:15:22.363Z"}}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:lobehub:lobehub:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "1D7F83BA-FA07-4B09-BC8E-9F9B4609E770", "versionEndExcluding": "2.1.48", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "LobeHub is a work-and-lifestyle space to find, build, and collaborate with agent teammates that grow with you. Prior to 2.1.48, the webapi authentication layer trusts a client-controlled X-lobe-chat-auth header that is only XOR-obfuscated, not signed or otherwise authenticated. Because the XOR key is hardcoded in the repository, an attacker can forge arbitrary auth payloads and bypass authentication on protected webapi routes. Affected routes include /webapi/chat/[provider], /webapi/models/[provider], /webapi/models/[provider]/pull, and /webapi/create-image/comfyui. This vulnerability is fixed in 2.1.48."}], "id": "CVE-2026-39411", "lastModified": "2026-04-20T15:03:17.493", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.0, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 3.4, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-04-08T20:16:25.560", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/lobehub/lobehub/commit/3327b293d66c013f076cbc16cdbd05a61a3d0428"}, {"source": "security-advisories@github.com", "tags": ["Issue Tracking"], "url": "https://github.com/lobehub/lobehub/pull/13535"}, {"source": "security-advisories@github.com", "tags": ["Product"], "url": "https://github.com/lobehub/lobehub/releases/tag/v2.1.48"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/lobehub/lobehub/security/advisories/GHSA-5mwj-v5jw-5c97"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Vendor Advisory"], "url": "https://github.com/lobehub/lobehub/security/advisories/GHSA-5mwj-v5jw-5c97"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}, {"lang": "en", "value": "CWE-290"}, {"lang": "en", "value": "CWE-345"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.1.48)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "product": "lobehub", "vendor": "lobehub"}], "analysis": {"en": {"generated_at": "2026-04-08T20:21:04.139830+00:00", "value": {"mitigation_remediation": ["Upgrade LobeHub to version 2.1.48 or later, which removes the insecure header handling."], "summary": {"action": "Immediate Patch", "impact": "Authentication bypass enabling unauthorized access to protected web API routes"}, "threat_synthesis": {"affected_systems": "All installations of LobeHub running a version older than 2.1.48 are susceptible. The affected product is the LobeHub application as distributed in the public repository. Endpoints such as /webapi/chat/[provider], /webapi/models/[provider], /webapi/models/[provider]/pull, and /webapi/create-image/comfyui are unprotected for attackers who craft a forged header.\n", "description_and_impact": "The vulnerability allows an attacker to forge an X\u2011lobe\u2011chat\u2011auth header that bypasses the authentication logic on multiple API endpoints, including chat, model retrieval, model pulling, and image creation. This bypass can lead to unauthorized execution of privileged actions and exposure of sensitive data. The weakness stems from using a hard\u2011coded XOR key for obfuscation without proper authentication or signing, satisfying CWE\u2011287 and CWE\u2011290.\n", "risk_and_exploitability": "The CVSS score of 5.0 indicates a medium severity, but the lack of an authentication step makes this a straightforward exploit over the network, as long as the target is reachable. No exploit probability score is provided, and the vulnerability is not listed in CISA\u2019s KEV catalog. The likely attack vector involves sending an HTTP request with a forged X\u2011lobe\u2011chat\u2011auth header to any of the exposed webapi routes, allowing the attacker to impersonate a legitimate user and gain access to protected functionality.\n"}}}}, "created": "2026-04-09T08:18:15.137516+00:00", "updated": "2026-04-09T08:27:37.541844+00:00", "vendors": ["lobehub", "lobehub$PRODUCT$lobehub"]}