High 7.3Published Sep 14, 2026

CVE-2026-90819a2aproject a2a-java Authorization Header Construction BasePushNotificationSender.java BasePushNotificationSender.dispatchNotification response splitting

Updated under an hour ago (2026-10-19 09:00 UTC)

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Every CVE for a2aproject a2a-java

Exploited in the last 30 days

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.

CVSS: 7.3 HIGH (v3.1, CNA)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
Weakness (CWE): CWE-113, CWE-93
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Sep 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

a2aproject a2a-java a2aproject:a2a-java	1.2.0; 1.3.0 not affected	CNA record

References

https://vuldb.com/vuln/403322vdb-entry, technical-description
https://vuldb.com/vuln/403322/ctisignature, permissions-required
https://vuldb.com/cve/CVE-2026-90819third-party-advisory
https://vuldb.com/submit/922996third-party-advisory
https://github.com/a2aproject/a2a-java/pull/1043issue-tracking, patch
https://github.com/a2aproject/a2a-java/pull/1053issue-tracking, patch
https://github.com/a2aproject/a2a-java/commit/247a655043f145f6f8e3853724b6a543eaa02001patch
https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Finalpatch
https://github.com/a2aproject/a2a-java/product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.