CVE-2026-4957

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The vendor was contacted early about this disclosure but did not respond in any way."}, {"lang": "es", "value": "Se ha encontrado una vulnerabilidad en OpenBMB XAgent 1.0.0. El elemento afectado es la funci\u00f3n FunctionHandler.handle_tool_call del archivo XAgent/function_handler.py del componente Gestor de Claves API. Esta manipulaci\u00f3n del argumento api_key causa informaci\u00f3n sensible en los archivos de registro. El ataque puede iniciarse de forma remota. El exploit ha sido publicado y puede ser utilizado. Se contact\u00f3 al proveedor con antelaci\u00f3n sobre esta divulgaci\u00f3n, pero no respondi\u00f3 de ninguna manera."}], "id": "CVE-2026-4957", "lastModified": "2026-10-26T22:10:00.163", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "MULTIPLE", "availabilityImpact": "NONE", "baseScore": 3.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:M/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 6.4, "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": 2.7, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 1.4, "source": "cna@vuldb.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.0, "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": "HIGH", "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:H/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-2026-4957", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-27T15:30:58.845106Z", "version": "2.0.3"}}]}, "published": "2026-03-27T15:17:03.563", "references": [{"source": "cna@vuldb.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://gist.github.com/YLChen-007/6279f3de0c2dff7732eaaf820843b562"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/?ctiid.353834"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/?id.353834"}, {"source": "cna@vuldb.com", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://vuldb.com/?submit.777615"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}, {"lang": "en", "value": "CWE-532"}], "source": "cna@vuldb.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-532"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "1.0.0"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "XAgent", "source": "cna", "vendor": "OpenBMB"}, "product": "xagent", "vendor": "openbmb"}], "analysis": {"en": {"generated_at": "2026-03-27T16:20:38.286358+00:00", "value": {"mitigation_remediation": ["Apply the most recent patch for OpenBMB XAgent when it becomes available", "Restrict permissions on log files so that only trusted services and administrators can read them", "Configure the application to exclude sensitive fields such as api_key from log outputs", "Turn down or disable verbose logging during production to minimize data exposure", "Contact OpenBMB support for an official fix or additional mitigation guidance"], "summary": {"action": "Patch and Harden", "impact": "Information Disclosure via Log Files"}, "threat_synthesis": {"affected_systems": "This issue affects the OpenBMB XAgent product, specifically version 1.0.0. If other unlisted versions include the same FunctionHandler implementation, they may also be vulnerable, but the only confirmed impacted version is 1.0.0.", "description_and_impact": "The vulnerability exists in OpenBMB XAgent 1.0.0 within the FunctionHandler.handle_tool_call routine. By manipulating the api_key argument, an attacker can cause the application to write sensitive data into log files. This exposes credentials or other confidential information to any party that can read the logs, fulfilling the conditions of CWE\u2011200 (Information Exposure). The flaw does not allow arbitrary code execution but can be leveraged to gather secrets needed for subsequent attacks.", "risk_and_exploitability": "With a CVSS score of 5.1, the vulnerability is classified as moderate. The attack vector is remote, and the exploit is publicly available, although an EPSS score is not provided. The vulnerability is not listed as a known exploited vulnerability in CISA's KEV catalog. Given the explanatory description, an attacker can remotely trigger the faulty logging by sending crafted input that manipulates the api_key. Those who can read the log files can obtain exposed information, directly impacting confidentiality."}}}}, "created": "2026-03-27T20:28:20.649932+00:00", "updated": "2026-03-30T07:01:37.044081+00:00", "vendors": ["openbmb", "openbmb$PRODUCT$xagent"]}