CVE-2026-111764 A2A Java SDK - Broken Access Control

A2A Java SDK < 1.3.0.Final contains a broken access control vulnerability caused by lack of authorization checks in InMemoryTaskStore.get method, letting unauthenticated callers read tasks of others, exploit requires default configuration without authorization provider.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
20 October 2026
Updated
21 October 2026
Weakness
CWE-862

Vendor fix

Update to version 1.3.0.Final or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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