{"cve":"CVE-2026-57112","nvd":{"published":"2026-09-15T11:17:10.290","modified":"2026-09-16T18:17:09.877","status":"Deferred","description":"PraisonAI is a multi-agent teams system. From praisonaiagents 0.6.0 until 1.6.59 and PraisonAI 3.10.0 until 4.6.59, ToolsMCPServer.run_sse() in src/praisonai-agents/praisonaiagents/mcp/mcp_server.py mounts SseServerTransport on the legacy /sse and /messages/ endpoints without default Host, Origin, or authentication enforcement. A malicious website can use DNS rebinding against a reachable local or internal SSE server, supply attacker-controlled Host and Origin headers, enumerate registered tools, and invoke them with the server user's privileges. The Streamable HTTP transport rejects the same hostile Origin, which isolates the flaw to the legacy SSE wrapper. An initial remediation was released in praisonaiagents 1.6.59 and PraisonAI 4.6.59.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","score":8.3},"cwes":["CWE-306","CWE-346","CWE-862"],"references":["https://github.com/MervinPraison/PraisonAI/commit/2adfe7e8323f6deec66925cf15a885b6238895e9","https://github.com/MervinPraison/PraisonAI/releases/tag/v4.6.59","https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-vmf9-xx9w-86wx","https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-vmf9-xx9w-86wx"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-57112","score":0.00224,"percentile":0.13087,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-vmf9-xx9w-86wx","url":"https://osv.dev/vulnerability/GHSA-vmf9-xx9w-86wx","summary":"PraisonAI ToolsMCPServer legacy SSE transport accepts attacker Host/Origin and exposes registered tools","modified":"2026-07-23T15:11:24.572657546Z","packages":[{"ecosystem":"PyPI","name":"praisonaiagents","purl":"pkg:pypi/praisonaiagents","ranges":[">=0.6.0 <1.6.59"],"fixed":["1.6.59"]},{"ecosystem":"PyPI","name":"praisonai","purl":"pkg:pypi/praisonai","ranges":[">=3.10.0 <4.6.59"],"fixed":["4.6.59"]}]},{"id":"PYSEC-2026-3521","url":"https://osv.dev/vulnerability/PYSEC-2026-3521","summary":"PraisonAI ToolsMCPServer legacy SSE transport accepts attacker Host/Origin and exposes registered tools","modified":"2026-07-23T15:11:24.572657546Z","packages":[{"ecosystem":"PyPI","name":"praisonai","purl":"pkg:pypi/praisonai","ranges":[">=3.10.0 <4.6.59"],"fixed":["4.6.59"]}]},{"id":"PYSEC-2026-3534","url":"https://osv.dev/vulnerability/PYSEC-2026-3534","summary":"PraisonAI ToolsMCPServer legacy SSE transport accepts attacker Host/Origin and exposes registered tools","modified":"2026-07-23T15:11:24.572657546Z","packages":[{"ecosystem":"PyPI","name":"praisonaiagents","purl":"pkg:pypi/praisonaiagents","ranges":[">=0.6.0 <1.6.59"],"fixed":["1.6.59"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}