{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-81845", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-08-27T16:07:21.555Z", "datePublished": "2026-08-27T21:45:10.504Z", "dateUpdated": "2026-08-27T21:45:10.504Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-08-27T21:45:10.504Z"}, "title": "arben-adm mcp-sequential-thinking Import Session/Export Session server.py export_session path traversal", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-22", "lang": "en", "description": "Path Traversal"}]}], "affected": [{"vendor": "arben-adm", "product": "mcp-sequential-thinking", "versions": [{"version": "0.1", "status": "affected"}, {"version": "0.2", "status": "affected"}, {"version": "0.3", "status": "affected"}, {"version": "0.4", "status": "affected"}, {"version": "0.5.0", "status": "affected"}, {"version": "0.6.0", "status": "unaffected"}], "cpes": ["cpe:2.3:a:arben-adm:mcp-sequential-thinking:*:*:*:*:*:*:*:*"], "modules": ["Import Session/Export Session"]}], "descriptions": [{"lang": "en", "value": "A vulnerability has been found in arben-adm mcp-sequential-thinking up to 0.5.0. Impacted is the function import_session/export_session of the file mcp_sequential_thinking/server.py of the component Import Session/Export Session. Such manipulation of the argument file_path leads to path traversal. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.6.0 is recommended to address this issue. The name of the patch is 2fad3ee8ab1d0868b6c1afb5895bc336a10e5267. Upgrading the affected component is recommended."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 5.3, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 6.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C", "baseSeverity": "MEDIUM"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 6.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C", "baseSeverity": "MEDIUM"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 6.5, "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C"}}], "timeline": [{"time": "2026-08-27T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-08-27T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-08-27T18:12:39.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "Mcfly_Zhang (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/396171", "name": "VDB-396171 | arben-adm mcp-sequential-thinking Import Session/Export Session server.py export_session path traversal", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/396171/cti", "name": "VDB-396171 | CTI Indicators (IOB, IOC, TTP, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-81845", "name": "CVE-2026-81845 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/887254", "name": "Submit #887254 | arben-adm mcp-sequential-thinking <= 0.5.0 Fixed in 0.6.0 Path Traversal", "tags": ["third-party-advisory"]}, {"url": "https://github.com/arben-adm/mcp-sequential-thinking/issues/17", "tags": ["exploit", "issue-tracking"]}, {"url": "https://github.com/arben-adm/mcp-sequential-thinking/pull/18", "tags": ["issue-tracking", "patch"]}, {"url": "https://github.com/arben-adm/mcp-sequential-thinking/commit/2fad3ee8ab1d0868b6c1afb5895bc336a10e5267", "tags": ["patch"]}, {"url": "https://github.com/arben-adm/mcp-sequential-thinking/releases/tag/v0.6.0", "tags": ["patch"]}, {"url": "https://github.com/arben-adm/mcp-sequential-thinking/", "tags": ["product"]}], "tags": ["x_open-source"], "x_generator": ["VulDB PVTS v202608"]}}}

{}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:arben-adm:mcp-sequential-thinking:*:*:*:*:*:*:*:*"], "modules": ["Import Session/Export Session"], "product": "mcp-sequential-thinking", "vendor": "arben-adm", "versions": [{"status": "affected", "version": "0.1"}, {"status": "affected", "version": "0.2"}, {"status": "affected", "version": "0.3"}, {"status": "affected", "version": "0.4"}, {"status": "affected", "version": "0.5.0"}, {"status": "unaffected", "version": "0.6.0"}]}], "source": "cna@vuldb.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability has been found in arben-adm mcp-sequential-thinking up to 0.5.0. Impacted is the function import_session/export_session of the file mcp_sequential_thinking/server.py of the component Import Session/Export Session. Such manipulation of the argument file_path leads to path traversal. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.6.0 is recommended to address this issue. The name of the patch is 2fad3ee8ab1d0868b6c1afb5895bc336a10e5267. Upgrading the affected component is recommended."}], "id": "CVE-2026-81845", "lastModified": "2026-08-28T15:09:00.790", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 6.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.4, "source": "cna@vuldb.com", "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:L/VA:L/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": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}]}, "published": "2026-08-28T00:18:22.133", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/arben-adm/mcp-sequential-thinking/"}, {"source": "cna@vuldb.com", "url": "https://github.com/arben-adm/mcp-sequential-thinking/commit/2fad3ee8ab1d0868b6c1afb5895bc336a10e5267"}, {"source": "cna@vuldb.com", "url": "https://github.com/arben-adm/mcp-sequential-thinking/issues/17"}, {"source": "cna@vuldb.com", "url": "https://github.com/arben-adm/mcp-sequential-thinking/pull/18"}, {"source": "cna@vuldb.com", "url": "https://github.com/arben-adm/mcp-sequential-thinking/releases/tag/v0.6.0"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/cve/CVE-2026-81845"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/887254"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/396171"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/396171/cti"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "cna@vuldb.com", "type": "Primary"}]}

{}

{"created": "2026-08-28T15:00:13.526437+00:00", "updated": "2026-08-28T15:00:13.526443+00:00", "vendors": []}