{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90820", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-09-13T19:01:40.764Z", "datePublished": "2026-09-14T20:45:11.104Z", "dateUpdated": "2026-09-14T20:45:11.104Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-09-14T20:45:11.104Z"}, "title": "a2aproject a2a-java AuthorizationRequestHandlerDecorator.java AuthorizationRequestHandlerDecorator.onListTasks authorization", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-862", "lang": "en", "description": "Missing Authorization"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-863", "lang": "en", "description": "Incorrect Authorization"}]}], "affected": [{"vendor": "a2aproject", "product": "a2a-java", "versions": [{"version": "1.2.0", "status": "affected"}, {"version": "1.3.0", "status": "unaffected"}], "cpes": ["cpe:2.3:a:a2aproject:a2a-java:*:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "A security vulnerability has been detected in a2aproject a2a-java 1.2.0. The impacted element is the function AuthorizationRequestHandlerDecorator.onListTasks of the file server-common/src/main/java/org/a2aproject/sdk/server/requesthandlers/AuthorizationRequestHandlerDecorator.java. Such manipulation leads to missing authorization. The attack can be launched remotely. Upgrading to version 1.3.0 is sufficient to resolve this issue. The name of the patch is e9a1abf9c90c02b16d17293afdc3cc2f555d63a6. The affected component should be upgraded."}], "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": "2026-09-13T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-09-13T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-09-13T21:06:50.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "colorfullbz (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/403323", "name": "VDB-403323 | a2aproject a2a-java AuthorizationRequestHandlerDecorator.java AuthorizationRequestHandlerDecorator.onListTasks authorization", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/403323/cti", "name": "VDB-403323 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-90820", "name": "CVE-2026-90820 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/925152", "name": "Submit #925152 | a2a-project a2a-java v1.2.0.Final CWE-862", "tags": ["third-party-advisory"]}, {"url": "https://github.com/a2aproject/a2a-java/pull/1038", "tags": ["issue-tracking", "patch"]}, {"url": "https://github.com/a2aproject/a2a-java/commit/e9a1abf9c90c02b16d17293afdc3cc2f555d63a6", "tags": ["patch"]}, {"url": "https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Final", "tags": ["patch"]}, {"url": "https://github.com/a2aproject/a2a-java/", "tags": ["product"]}], "tags": ["x_open-source"], "x_generator": ["VulDB PVTS v202609"]}}}

{}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:a2aproject:a2a-java:*:*:*:*:*:*:*:*"], "product": "a2a-java", "vendor": "a2aproject", "versions": [{"status": "affected", "version": "1.2.0"}, {"status": "unaffected", "version": "1.3.0"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A security vulnerability has been detected in a2aproject a2a-java 1.2.0. The impacted element is the function AuthorizationRequestHandlerDecorator.onListTasks of the file server-common/src/main/java/org/a2aproject/sdk/server/requesthandlers/AuthorizationRequestHandlerDecorator.java. Such manipulation leads to missing authorization. The attack can be launched remotely. Upgrading to version 1.3.0 is sufficient to resolve this issue. The name of the patch is e9a1abf9c90c02b16d17293afdc3cc2f555d63a6. The affected component should be upgraded."}], "id": "CVE-2026-90820", "lastModified": "2026-09-14T21:17:42.363", "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": "[email protected]", "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": "[email protected]", "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": "[email protected]", "type": "Secondary"}]}, "published": "2026-09-14T21:17:42.363", "references": [{"source": "[email protected]", "url": "https://github.com/a2aproject/a2a-java/"}, {"source": "[email protected]", "url": "https://github.com/a2aproject/a2a-java/commit/e9a1abf9c90c02b16d17293afdc3cc2f555d63a6"}, {"source": "[email protected]", "url": "https://github.com/a2aproject/a2a-java/pull/1038"}, {"source": "[email protected]", "url": "https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Final"}, {"source": "[email protected]", "url": "https://vuldb.com/cve/CVE-2026-90820"}, {"source": "[email protected]", "url": "https://vuldb.com/submit/925152"}, {"source": "[email protected]", "url": "https://vuldb.com/vuln/403323"}, {"source": "[email protected]", "url": "https://vuldb.com/vuln/403323/cti"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}, {"lang": "en", "value": "CWE-863"}], "source": "[email protected]", "type": "Primary"}]}

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