{"id":"CVE-2026-116477","aliases":[],"cve":{"records":[{"id":"CVE-2026-116477","source":"VulDB","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-26T10:59:40.497Z","published":"2026-10-26T19:15:22.114Z","modified":"2026-10-31T01:43:26.819Z"}],"publishers":[{"name":"VulDB","role":"CNA","organizationId":"1af790b2-7ee1-4545-860a-a788eba489b5","modified":"2026-10-26T19:15:22.114Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-31T01:43:26.819Z"}],"references":[{"url":"https://vuldb.com/vuln/426390","tags":["vdb-entry","technical-description"],"source":"VulDB"},{"url":"https://vuldb.com/vuln/426390/cti","tags":["signature","permissions-required"],"source":"VulDB"},{"url":"https://vuldb.com/cve/CVE-2026-116477","tags":["third-party-advisory"],"source":"VulDB"},{"url":"https://vuldb.com/submit/1014890","tags":["third-party-advisory"],"source":"VulDB"},{"url":"https://github.com/a2aproject/a2a-dotnet/pull/452","tags":["issue-tracking","patch"],"source":"VulDB"},{"url":"https://github.com/a2aproject/a2a-dotnet/commit/ccbd12b6108a6a8f0fd5d8b4a9ece3c8a94ba1e4","tags":["patch"],"source":"VulDB"},{"url":"https://github.com/a2aproject/a2a-dotnet/releases/tag/v1.0.0-preview3","tags":["patch"],"source":"VulDB"},{"url":"https://github.com/a2aproject/a2a-dotnet/","tags":["product"],"source":"VulDB"}],"weaknesses":[{"id":"CWE-209","description":"Information Exposure Through Error Message","source":"VulDB"},{"id":"CWE-200","description":"Information Disclosure","source":"VulDB"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-31T01:43:16.112423Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"a2aproject a2a-dotnet Parser A2AJsonRpcProcessor.cs A2AJsonRpcProcessor.ProcessRequestAsync information exposure","titleSource":"VulDB","descriptionSource":"VulDB","description":"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.","score":5.3,"severity":"medium","published":"2026-10-26T19:15:22.114Z","modified":"2026-10-31T01:43:26.819Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"a2aproject","name":"a2a-dotnet","platforms":[],"versions":[{"version":"1.0.0-preview2","status":"affected"},{"version":"1.0.0-preview3","status":"unaffected"}],"cpes":["cpe:2.3:a:a2aproject:a2a-dotnet:*:*:*:*:*:*:*:*"],"source":"VulDB","url":"https://www.cve.org/CVERecord?id=CVE-2026-116477"}],"remediation":[],"references":["https://vuldb.com/vuln/426390","https://vuldb.com/vuln/426390/cti","https://vuldb.com/cve/CVE-2026-116477","https://vuldb.com/submit/1014890","https://github.com/a2aproject/a2a-dotnet/pull/452","https://github.com/a2aproject/a2a-dotnet/commit/ccbd12b6108a6a8f0fd5d8b4a9ece3c8a94ba1e4","https://github.com/a2aproject/a2a-dotnet/releases/tag/v1.0.0-preview3","https://github.com/a2aproject/a2a-dotnet/"],"sources":[{"name":"CVE","id":"CVE-2026-116477","modified":"2026-10-31T01:43:26.819Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-116477"}],"assessments":[{"source":"VulDB","vector":"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","score":5.3},{"source":"VulDB","vector":"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","score":4.3},{"source":"VulDB","vector":"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","score":4.3},{"source":"VulDB","vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N/E:ND/RL:OF/RC:C","score":4}],"sourceAffected":[],"observedAt":"2026-10-31T01:57:35.080Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T09:15:31.262Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-31T02:05:37.744Z","attemptedAt":"2026-10-31T02:05:37.744Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-31T02:05:37.748Z","attemptedAt":"2026-10-31T02:05:37.748Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-31T02:05:37.746Z","attemptedAt":"2026-10-31T02:05:37.746Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-31T02:05:37.764Z","attemptedAt":"2026-10-31T02:05:37.764Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-110072","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-110072","modified":"Oct 26, 2026, 7:15:22 PM","score":5.3,"vector":"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","checkedAt":"2026-10-31T02:05:37.746Z"},{"source":"GitHub Advisory Database","id":"GHSA-6fjg-cx22-jv29","url":"https://github.com/advisories/GHSA-6fjg-cx22-jv29","modified":"2026-10-26T21:36:10Z","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","checkedAt":"2026-10-31T02:05:37.748Z"},{"source":"NVD","id":"CVE-2026-116477","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116477","modified":"2026-10-27T14:52:13.410","score":5.3,"vector":"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","checkedAt":"2026-10-31T02:05:37.744Z"},{"source":"NVD","id":"CVE-2026-116477","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116477","modified":"2026-10-27T14:52:13.410","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","checkedAt":"2026-10-31T02:05:37.744Z"},{"source":"NVD","id":"CVE-2026-116477","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116477","modified":"2026-10-27T14:52:13.410","score":4,"vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N","checkedAt":"2026-10-31T02:05:37.744Z"},{"source":"FIRST EPSS","id":"CVE-2026-116477","url":"https://www.first.org/epss/","probability":0.00315,"percentile":0.24447,"date":"2026-10-30","checkedAt":"2026-10-31T02:05:37.764Z"}],"aiSummary":{"text":"The a2aproject a2a-dotnet Parser up to version 1.0.0-preview2 has an information exposure vulnerability in A2AJsonRpcProcessor.cs, where the A2AJsonRpcProcessor.ProcessRequestAsync function can reveal information through error messages, potentially allowing remote attacks. The vulnerability is identified as CWE-209 and CWE-200.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:15:38.966Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-116477"}]}}