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CVE-2026-116478— a2aproject a2a-go Push Notification agentexec.go CreateExecutor information exposure

Quick assessment

Affected
a2aproject a2a-go
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 a2aproject 的 a2a-go 组件（版本 2.4.0 及以下）中发现一个安全漏洞。该漏洞影响 Push Notification Handler 组件中 a2asrv/agentexec.go 文件的 CreateExecutor 函数。攻击者可通过恶意操作触发错误信息泄露，导致敏感信息暴露。该攻击可远程发起。升级至 2.5.0 版本可消除此问题，相关修复补丁的提交哈希为 f4d588216b0c9520e94d571bab725c38ce23064c。建议立即升级受影响的组件。

CVSS 5.3 · Medium
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I. Basic Information for CVE-2026-116478

Vulnerability Information
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Vulnerability Title
a2aproject a2a-go Push Notification agentexec.go CreateExecutor information exposure
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in a2aproject a2a-go up to 2.4.0. This affects the function CreateExecutor of the file a2asrv/agentexec.go of the component Push Notification Handler. The manipulation results in information exposure through error message. It is possible to launch the attack remotely. Upgrading to version 2.5.0 mitigates this issue. The patch is identified as f4d588216b0c9520e94d571bab725c38ce23064c. It is recommended to upgrade the affected component.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过错误消息导致的信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
a2aproject a2a-go 2.0 cpe:2.3:a:a2aproject:a2a-go:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-116478

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III. Intelligence Information for CVE-2026-116478

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Patches & Fixes for CVE-2026-116478 (2)

Vendor Pages for CVE-2026-116478 (2)

Same Patch Batch · a2aproject · 2026-10-26 · 4 CVEs total

CVE-2026-116476 5.4 MEDIUM a2aproject a2a-dotnet TaskProjection TaskProjection.ApplyStatus race condition
CVE-2026-116479 4.3 MEDIUM a2aproject a2a-java JSON-RPC Error getMessage information exposure
CVE-2026-116477 4.3 MEDIUM a2aproject a2a-dotnet Parser A2AJsonRpcProcessor.cs A2AJsonRpcProcessor.ProcessRequestAsyn

IV. Related Vulnerabilities

Same vendor: a2aproject
Same weakness: CWE-209