CVE-2026-117503
Deferred Deferred - Pending Action

Resource Consumption in a2a-go REST SSE Handler

Publication date: 2026-10-27

Last updated on: 2026-10-27

Assigner: VulDB

Description
A vulnerability was determined in a2aproject a2a-go up to 2.4.0. Impacted is an unknown function of the file a2asrv/rest.go of the component REST SSE handler. This manipulation causes resource consumption. It is possible to initiate the attack remotely. Upgrading to version 2.5.0 is recommended to address this issue. Patch name: ff6035bd21e44bb3ee1bfa547885b8c08327fa01. It is recommended to upgrade the affected component.

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Meta Information

Published
2026-10-27
Last Modified
2026-10-27
Generated
2026-10-27
AI Q&A
2026-10-27
EPSS Evaluated
N/A
NVD
CVE-2026-117503
EUVD
EUVD-2026-110861

Affected Vendors & Products

Showing 5 associated CPEs
Vendor Product Version / Range
a2aproject a2a-go 2.0
a2aproject a2a-go 2.1
a2aproject a2a-go 2.2
a2aproject a2a-go 2.3
a2aproject a2a-go 2.4.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.
CWE-404 The product does not release or incorrectly releases a resource before it is made available for re-use.

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Executive Summary

This vulnerability is in the a2a-go project up to version 2.4.0, specifically in the REST SSE handler component. It allows remote attackers to cause resource consumption by manipulating an unknown function in the file a2asrv/rest.go. Upgrading to version 2.5.0 is recommended to fix this issue.

Impact Analysis

This vulnerability can lead to resource consumption, potentially causing service degradation or denial of service. Attackers could remotely exploit it to consume excessive server resources, impacting performance and availability.

Mitigation Strategies

Upgrade the a2a-go component to version 2.5.0 or later to address the resource consumption vulnerability in the REST SSE handler.

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