{
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    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-90819",
        "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "state": "PUBLISHED",
        "assignerShortName": "VulDB",
        "dateReserved": "2026-09-13T19:01:37.271Z",
        "datePublished": "2026-09-14T20:30:11.624Z",
        "dateUpdated": "2026-09-15T14:25:39.139Z"
    },
    "containers": {
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                "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
                "shortName": "VulDB",
                "dateUpdated": "2026-09-14T20:30:11.624Z"
            },
            "title": "a2aproject a2a-java Authorization Header Construction BasePushNotificationSender.java BasePushNotificationSender.dispatchNotification response splitting",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "cweId": "CWE-113",
                            "lang": "en",
                            "description": "HTTP Response Splitting"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "cweId": "CWE-93",
                            "lang": "en",
                            "description": "CRLF Injection"
                        }
                    ]
                }
            ],
            "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:*:*:*:*:*:*:*:*"
                    ],
                    "modules": [
                        "Authorization Header Construction"
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A weakness has been identified in a2aproject a2a-java 1.2.0. The affected element is the function BasePushNotificationSender.dispatchNotification of the file server-common/src/main/java/org/a2aproject/sdk/server/tasks/BasePushNotificationSender.java of the component Authorization Header Construction. This manipulation causes http response splitting. The attack can be initiated remotely. Upgrading to version 1.3.0 is sufficient to fix this issue. Patch name: 247a655043f145f6f8e3853724b6a543eaa02001. You should upgrade the affected component."
                }
            ],
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                        "version": "4.0",
                        "baseScore": 6.9,
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X",
                        "baseSeverity": "MEDIUM"
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                },
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                    "cvssV3_1": {
                        "version": "3.1",
                        "baseScore": 7.3,
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C",
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                        "version": "2.0",
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            "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": "2026-09-13T21:06:47.000Z",
                    "lang": "en",
                    "value": "VulDB entry last update"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "ez-lbz (VulDB User)",
                    "type": "reporter"
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            ],
            "references": [
                {
                    "url": "https://vuldb.com/vuln/403322",
                    "name": "VDB-403322 | a2aproject a2a-java Authorization Header Construction BasePushNotificationSender.java BasePushNotificationSender.dispatchNotification response splitting",
                    "tags": [
                        "vdb-entry",
                        "technical-description"
                    ]
                },
                {
                    "url": "https://vuldb.com/vuln/403322/cti",
                    "name": "VDB-403322 | CTI Indicators (IOB, IOC, IOA)",
                    "tags": [
                        "signature",
                        "permissions-required"
                    ]
                },
                {
                    "url": "https://vuldb.com/cve/CVE-2026-90819",
                    "name": "CVE-2026-90819 | CVE Analysis and Report",
                    "tags": [
                        "third-party-advisory"
                    ]
                },
                {
                    "url": "https://vuldb.com/submit/922996",
                    "name": "Submit #922996 | a2aproject a2a-java v1.2.0 CRLF",
                    "tags": [
                        "third-party-advisory"
                    ]
                },
                {
                    "url": "https://github.com/a2aproject/a2a-java/pull/1043",
                    "tags": [
                        "issue-tracking",
                        "patch"
                    ]
                },
                {
                    "url": "https://github.com/a2aproject/a2a-java/pull/1053",
                    "tags": [
                        "issue-tracking",
                        "patch"
                    ]
                },
                {
                    "url": "https://github.com/a2aproject/a2a-java/commit/247a655043f145f6f8e3853724b6a543eaa02001",
                    "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"
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        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-15T14:25:29.392033Z",
                                "id": "CVE-2026-90819",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
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                                        "Technical Impact": "partial"
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                                "role": "CISA Coordinator",
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                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
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                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-15T14:25:39.139Z"
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}