CVE-2026-5535

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This impacts an unknown function of the file FileUtils.java of the component MQTT Message Handler. Performing a manipulation of the argument dataSet results in path traversal. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way."}, {"lang": "es", "value": "Una falla de seguridad ha sido descubierta en FedML-AI FedML hasta la versi\u00f3n 0.8.9. Esto afecta una funci\u00f3n desconocida del archivo FileUtils.java del componente Gestor de Mensajes MQTT. Realizar una manipulaci\u00f3n del argumento dataSet resulta en salto de ruta. El ataque es posible de llevar a cabo de forma remota. El exploit ha sido publicado y puede ser utilizado para ataques. El proveedor fue contactado con antelaci\u00f3n sobre esta divulgaci\u00f3n, pero no respondi\u00f3 de ninguna manera."}], "id": "CVE-2026-5535", "lastModified": "2026-07-24T20:10:00.147", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 4.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "cna@vuldb.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.1, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-5535", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-04-06T15:36:03.761442Z", "version": "2.0.3"}}]}, "published": "2026-04-05T03:16:01.700", "references": [{"source": "cna@vuldb.com", "tags": ["Exploit", "Mitigation", "Third Party Advisory"], "url": "https://github.com/AnalogyC0de/public_exp/issues/25"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/submit/782200"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/vuln/355288"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required"], "url": "https://vuldb.com/vuln/355288/cti"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.8.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.8.1"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.8.2"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.8.3"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.8.4"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.8.5"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.8.6"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.8.7"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.8.8"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.8.9"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "FedML", "source": "cna", "vendor": "FedML-AI"}, "product": "fedml", "vendor": "fedml-ai"}], "analysis": {"en": {"generated_at": "2026-04-05T05:20:35.149567+00:00", "value": {"mitigation_remediation": ["Upgrade to a version later than 0.8.9 if one exists.\n", "If an upgrade is unavailable, isolate the affected host from external MQTT traffic using firewall rules or network segmentation.\n", "Implement server\u2011side input validation to reject dataset arguments containing path traversal sequences.\n", "Monitor MQTT logs for anomalous requests attempting to access protected files.\n", "Check the vendor\u2019s site or security advisories regularly for a future patch."], "summary": {"action": "Mitigate", "impact": "Unauthorized Access via Path Traversal"}, "threat_synthesis": {"affected_systems": "FedML-AI\u2019s FedML product, versions up to and including 0.8.9, is affected. No further version details are supplied.\n", "description_and_impact": "The flaw resides in FileUtils.java within the MQTT message handling component of FedML-AI FedML. By manipulating the argument dataSet, an attacker can perform a path traversal attack, enabling reading or writing of files outside the intended directory. This weakness can compromise confidentiality and integrity of the system\u2019s files and configuration.\n", "risk_and_exploitability": "The CVSS score of 5.3 indicates moderate severity. EPSS information is missing, and the vulnerability is not listed in the CISA KEV catalog. The description explicitly states the attack is possible remotely, likely via an MQTT interface that accepts a dataset parameter. An attacker who can send crafted MQTT messages could exploit the path traversal to gain unauthorized file access.\n"}}}}, "created": "2026-04-06T20:26:44.543023+00:00", "updated": "2026-04-06T21:57:19.441062+00:00", "vendors": ["fedml-ai", "fedml-ai$PRODUCT$fedml"]}