{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-116477", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-10-26T10:59:40.497Z", "datePublished": "2026-10-26T19:15:22.114Z", "dateUpdated": "2026-10-26T19:15:22.114Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-10-26T19:15:22.114Z"}, "title": "a2aproject a2a-dotnet Parser A2AJsonRpcProcessor.cs A2AJsonRpcProcessor.ProcessRequestAsync information exposure", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-209", "lang": "en", "description": "Information Exposure Through Error Message"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-200", "lang": "en", "description": "Information Disclosure"}]}], "affected": [{"vendor": "a2aproject", "product": "a2a-dotnet", "versions": [{"version": "1.0.0-preview2", "status": "affected"}, {"version": "1.0.0-preview3", "status": "unaffected"}], "cpes": ["cpe:2.3:a:a2aproject:a2a-dotnet:*:*:*:*:*:*:*:*"], "modules": ["Parser"]}], "descriptions": [{"lang": "en", "value": "A security vulnerability has been detected in a2aproject a2a-dotnet up to 1.0.0-preview2. The impacted element is the function A2AJsonRpcProcessor.ProcessRequestAsync of the file src/A2A.AspNetCore/A2AJsonRpcProcessor.cs of the component Parser. The manipulation leads to information exposure through error message. It is possible to initiate the attack remotely. Upgrading to version 1.0.0-preview3 is sufficient to resolve this issue. The identifier of the patch is ccbd12b6108a6a8f0fd5d8b4a9ece3c8a94ba1e4. 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:N/VA:N/SC:N/SI:N/SA:N/E:X", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 4.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C", "baseSeverity": "MEDIUM"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 4.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C", "baseSeverity": "MEDIUM"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 4, "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N/E:ND/RL:OF/RC:C"}}], "timeline": [{"time": "2026-10-26T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-10-26T01:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-10-26T12:04:58.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "colorfullbz (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/426390", "name": "VDB-426390 | a2aproject a2a-dotnet Parser A2AJsonRpcProcessor.cs A2AJsonRpcProcessor.ProcessRequestAsync information exposure", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/426390/cti", "name": "VDB-426390 | CTI Indicators (IOB, IOC, TTP, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-116477", "name": "CVE-2026-116477 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/1014890", "name": "Submit #1014890 | a2aproject a2a-dotnet \u2264 v1.0.0-preview2 CWE-209", "tags": ["third-party-advisory"]}, {"url": "https://github.com/a2aproject/a2a-dotnet/pull/452", "tags": ["issue-tracking", "patch"]}, {"url": "https://github.com/a2aproject/a2a-dotnet/commit/ccbd12b6108a6a8f0fd5d8b4a9ece3c8a94ba1e4", "tags": ["patch"]}, {"url": "https://github.com/a2aproject/a2a-dotnet/releases/tag/v1.0.0-preview3", "tags": ["patch"]}, {"url": "https://github.com/a2aproject/a2a-dotnet/", "tags": ["product"]}], "tags": ["x_open-source"], "x_generator": ["VulDB PVTS v202610"]}}}

{}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:a2aproject:a2a-dotnet:*:*:*:*:*:*:*:*"], "modules": ["Parser"], "product": "a2a-dotnet", "vendor": "a2aproject", "versions": [{"status": "affected", "version": "1.0.0-preview2"}, {"status": "unaffected", "version": "1.0.0-preview3"}]}], "source": "cna@vuldb.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A security vulnerability has been detected in a2aproject a2a-dotnet up to 1.0.0-preview2. The impacted element is the function A2AJsonRpcProcessor.ProcessRequestAsync of the file src/A2A.AspNetCore/A2AJsonRpcProcessor.cs of the component Parser. The manipulation leads to information exposure through error message. It is possible to initiate the attack remotely. Upgrading to version 1.0.0-preview3 is sufficient to resolve this issue. The identifier of the patch is ccbd12b6108a6a8f0fd5d8b4a9ece3c8a94ba1e4. Upgrading the affected component is recommended."}], "id": "CVE-2026-116477", "lastModified": "2026-10-26T20:17:54.890", "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": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "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:X/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"}]}, "published": "2026-10-26T20:17:54.890", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/a2aproject/a2a-dotnet/"}, {"source": "cna@vuldb.com", "url": "https://github.com/a2aproject/a2a-dotnet/commit/ccbd12b6108a6a8f0fd5d8b4a9ece3c8a94ba1e4"}, {"source": "cna@vuldb.com", "url": "https://github.com/a2aproject/a2a-dotnet/pull/452"}, {"source": "cna@vuldb.com", "url": "https://github.com/a2aproject/a2a-dotnet/releases/tag/v1.0.0-preview3"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/cve/CVE-2026-116477"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/1014890"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/426390"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/426390/cti"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}, {"lang": "en", "value": "CWE-209"}], "source": "cna@vuldb.com", "type": "Primary"}]}

{}

{"created": "2026-10-26T21:00:10.151586+00:00", "updated": "2026-10-26T21:00:10.151593+00:00", "vendors": []}