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CVE-2026-90819

a2a-java · Vulnerability

CVSS 4.0 6.9 MEDIUMCVSS 3.1 7.3 HIGHCVSS 3.0 7.3 HIGHCVSS 2.0 7.5 Check source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-90819

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-90819

Published

a2a-java

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "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"
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON