CVE-2026-40115

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{"affected": [{"affectedData": [{"product": "PraisonAI", "vendor": "MervinPraison", "versions": [{"status": "affected", "version": "< 4.5.128"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:*", "matchCriteriaId": "56CDE5F5-B03C-4C3A-9A92-F61C9DFDA9B1", "versionEndExcluding": "4.5.128", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "PraisonAI is a multi-agent teams system. Prior to 4.5.128, the WSGI-based recipe registry server (server.py) reads the entire HTTP request body into memory based on the client-supplied Content-Length header with no upper bound. Combined with authentication being disabled by default (no token configured), any local process can send arbitrarily large POST requests to exhaust server memory and cause a denial of service. The Starlette-based server (serve.py) has RequestSizeLimitMiddleware with a 10MB limit, but the WSGI server lacks any equivalent protection. This vulnerability is fixed in 4.5.128."}, {"lang": "es", "value": "PraisonAI es un sistema de equipos multiagente. Antes de la 4.5.128, el servidor de registro de recetas basado en WSGI (server.py) lee el cuerpo completo de la solicitud HTTP en la memoria bas\u00e1ndose en el encabezado Content-Length proporcionado por el cliente, sin l\u00edmite superior. Combinado con la autenticaci\u00f3n deshabilitada por defecto (sin token configurado), cualquier proceso local puede enviar solicitudes POST arbitrariamente grandes para agotar la memoria del servidor y causar una denegaci\u00f3n de servicio. El servidor basado en Starlette (serve.py) tiene RequestSizeLimitMiddleware con un l\u00edmite de 10 MB, pero el servidor WSGI carece de cualquier protecci\u00f3n equivalente. Esta vulnerabilidad se corrige en la 4.5.128."}], "id": "CVE-2026-40115", "lastModified": "2026-10-26T21:10:00.170", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-40115", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-04-13T15:28:36.719333Z", "version": "2.0.3"}}]}, "published": "2026-04-09T22:16:35.143", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-2xgv-5cv2-47vv"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-2xgv-5cv2-47vv"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,4.5.128)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "PraisonAI", "source": "cna", "vendor": "MervinPraison"}, "product": "praisonai", "vendor": "mervinpraison"}], "analysis": {"en": {"generated_at": "2026-04-09T22:41:11.125116+00:00", "value": {"mitigation_remediation": ["Upgrade PraisonAI to version 4.5.128 or later.", "If an upgrade is not yet possible, isolate the recipe registry service behind a firewall or restrict access so that only authorized systems can reach it.", "Consider disabling the WSGI recipe registry server or replacing it with the Starlette\u2011based serve.py, which enforces a 10\u202fMB request size limit."], "summary": {"action": "Immediate Patch", "impact": "Memory Exhaustion Denial of Service"}, "threat_synthesis": {"affected_systems": "All installations of PraisonAI prior to release 4.5.128 are impacted. The vulnerability exists in the server.py module of this product from the vendor MervinPraison.", "description_and_impact": "The vulnerability resides in the WSGI\u2011based recipe registry server (server.py) of PraisonAI. The server reads the entire HTTP request body into memory using the client\u2011supplied Content\u2011Length header without imposing an upper bound. When authentication is disabled by default, any local process can send arbitrarily large POST requests, causing the server to consume all available memory and crash. This issue is a classic instance of uncontrolled resource consumption, categorized as CWE\u2011770. The result is a denial of service that can leverage local privileges to disrupt the system's availability.", "risk_and_exploitability": "The CVSS score of 6.2 indicates a medium severity threat. The EPSS score is not available, and the vulnerability is not listed in the CISA KEV catalog. Exploitability is high for local attackers due to the default lack of authentication and the straightforward ability to send large request payloads. Remote exploitation would require connectivity to the server and may be mitigated by network segmentation, but the local context presents the most likely attack vector. The primary risk is memory exhaustion leading to service interruption rather than confidentiality or integrity compromise."}}}}, "created": "2026-04-10T08:38:13.359073+00:00", "updated": "2026-04-10T09:28:55.883154+00:00", "vendors": ["mervinpraison", "mervinpraison$PRODUCT$praisonai"]}