CVE-2026-90819

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Source

https://cve.org/CVERecord?id=CVE-2026-90819

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90819.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-90819

Published

2026-09-14T20:30:11Z

Modified

2026-09-16T08:05:20Z

Severity

6.9 (Medium) CVSS_V4 - 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 CVSS Calculator

Summary

a2aproject a2a-java Authorization Header Construction BasePushNotificationSender.java BasePushNotificationSender.dispatchNotification response splitting

Details

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.

Database specific

{
    "cna_assigner": "VulDB",
    "cwe_ids": [
        "CWE-113",
        "CWE-93"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90819.json"
}

References

Affected packages

Git / github.com/a2aproject/a2a-java

Affected ranges

Type

GIT

Repo

https://github.com/a2aproject/a2a-java

Events

Introduced

0b5c1f8d39cbd5171546e6ae6256b2834ab49671

Fixed

247a655043f145f6f8e3853724b6a543eaa02001

Fixed

43bde91e3319f0a92db3ac2104215dcdbbb77679

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "1.2.0"
        },
        {
            "last_affected": "1.2.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

1.*

1.2.0

v1.*

v1.2.0.Final

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90819.json"

vanir_signatures

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        "deprecated": false,
        "digest": {
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            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-90819-042422f6",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/a2aproject/a2a-java/commit/247a655043f145f6f8e3853724b6a543eaa02001",
        "target": {
            "file": "spec/src/main/java/org/a2aproject/sdk/spec/AuthenticationInfo.java"
        }
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            "threshold": 0.9
        },
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    },
    {
        "deprecated": false,
        "digest": {
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            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-90819-a0631515",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/a2aproject/a2a-java/commit/247a655043f145f6f8e3853724b6a543eaa02001",
        "target": {
            "file": "server-common/src/main/java/org/a2aproject/sdk/server/tasks/BasePushNotificationSender.java"
        }
    },
    {
        "deprecated": false,
        "digest": {
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            "length": 1591
        },
        "id": "CVE-2026-90819-a9d188f2",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/a2aproject/a2a-java/commit/247a655043f145f6f8e3853724b6a543eaa02001",
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        }
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]

vanir_signatures_modified

"2026-09-16T08:05:20Z"