{"id":"CVE-2026-61427","state":"PUBLISHED","title":"PraisonAI before 4.6.78 Authentication Bypass via HTTP-stream","description":"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).","publishedAt":"2026-07-15T11:25:37.581Z","updatedAt":"2026-07-16T15:18:17.077Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"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","source":"VulnCheck"},"assigner":"VulnCheck","products":["MervinPraison PraisonAI"],"affected":[{"vendor":"MervinPraison","product":"PraisonAI","packageURL":"pkg:pypi/praisonai","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"4.6.78","versionType":"semver"},{"version":"4.6.78","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-hc5v-gxvj-58wh","https://www.vulncheck.com/advisories/praisonai-before-authentication-bypass-via-http-stream"],"weaknesses":["CWE-20"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/61xxx/CVE-2026-61427.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-61427","state":"PUBLISHED","datePublished":"2026-07-15T11:25:37.581Z","dateUpdated":"2026-07-16T15:18:17.077Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-07-09T14:05:21.470Z"},"containers":{"cna":{"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)."}],"affected":[{"vendor":"MervinPraison","product":"PraisonAI","packageURL":"pkg:pypi/praisonai","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"4.6.78","versionType":"semver"},{"version":"4.6.78","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-hc5v-gxvj-58wh","name":"GitHub Security Advisory (GHSA-hc5v-gxvj-58wh)","tags":["vendor-advisory"]},{"url":"https://www.vulncheck.com/advisories/praisonai-before-authentication-bypass-via-http-stream","name":"VulnCheck Advisory: PraisonAI before 4.6.78 Authentication Bypass via HTTP-stream","tags":["third-party-advisory"]}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","lang":"en","description":"Improper Input Validation","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-07-15T11:25:37.581Z"},"datePublic":"2026-06-25T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:*","versionEndExcluding":"4.6.78"}]}]}],"credits":[{"lang":"en","value":"dinhvaren","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-hc5v-gxvj-58wh","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-16T15:17:49.489510Z","id":"CVE-2026-61427","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-16T15:18:17.077Z"}}]}}}