{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-61427", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-07-09T14:05:21.470Z", "datePublished": "2026-07-15T11:25:37.581Z", "dateUpdated": "2026-07-15T11:25:37.581Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-07-15T11:25:37.581Z"}, "datePublic": "2026-06-25T00:00:00.000Z", "title": "PraisonAI before 4.6.78 Authentication Bypass via HTTP-stream", "descriptions": [{"lang": "en", "value": "PraisonAI before 4.6.78 exposes the MCP HTTP-stream transport without authentication by default: the CLI --api-key option defaults to None, and the server only enforces Authorization/Bearer checks when an API key is configured. When an operator runs 'praisonai mcp serve --transport http-stream' without an API key, an unauthenticated client (no Authorization header, and no Origin header, which is also permitted) can initialize a session, enumerate the available tools (tools/list), and invoke tools (tools/call). Additionally, the dispatcher forwards tool-call arguments to handlers without validating them against the advertised inputSchema. The server binds to 127.0.0.1 by default, so remote exploitation requires the operator to bind to a network-accessible address (e.g., --host 0.0.0.0)."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Input Validation", "cweId": "CWE-20", "type": "CWE"}]}], "affected": [{"vendor": "MervinPraison", "product": "PraisonAI", "defaultStatus": "unaffected", "packageURL": "pkg:pypi/praisonai", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "4.6.78"}, {"version": "4.6.78", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.6.78"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW", "baseScore": 7.3, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-hc5v-gxvj-58wh", "name": "GitHub Security Advisory (GHSA-hc5v-gxvj-58wh)", "tags": ["vendor-advisory"]}, {"name": "VulnCheck Advisory: PraisonAI before 4.6.78 Authentication Bypass via HTTP-stream", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/praisonai-before-authentication-bypass-via-http-stream"}], "credits": [{"lang": "en", "value": "dinhvaren", "type": "reporter"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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