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CVE-2026-113705— a2aproject a2a-rs error.rs information exposure

Quick assessment

Affected
a2aproject a2a-rs
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-rs 项目（版本 0.4.3 及之前）中发现一个漏洞。该问题影响文件 a2a-server/src/error.rs 中某些未知的处理逻辑。攻击者可通过构造恶意输入，利用错误消息导致信息泄露。此攻击可远程实施。修复该问题的补丁提交哈希为 713b943af94ab2d521d483b841618b97a2e78a4d。建议应用该补丁以消除此漏洞。

CVSS 5.3 · Medium

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2026-113705

Vulnerability Information
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Vulnerability Title
a2aproject a2a-rs error.rs information exposure
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in a2aproject a2a-rs up to 0.4.3. This issue affects some unknown processing of the file a2a-server/src/error.rs. Executing a manipulation can lead to information exposure through error message. The attack can be executed remotely. This patch is called 713b943af94ab2d521d483b841618b97a2e78a4d. A patch should be applied to remediate this issue.
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-rs 0.4.0 cpe:2.3:a:a2aproject:a2a-rs:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-113705

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III. Intelligence Information for CVE-2026-113705

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Patches & Fixes for CVE-2026-113705 (2)

Vendor Pages for CVE-2026-113705 (1)

Same Patch Batch · a2aproject · 2026-10-20 · 9 CVEs total

CVE-2026-111765 7.5 HIGH A2A Java SDK: Android synchronous POST forwards credentials across authorities after incom
CVE-2026-111764 7.5 HIGH A2A Java SDK has a fail-open default task authorization
CVE-2026-113704 7.3 HIGH a2aproject a2a-rs Push Notification push_notification_sender.rs HttpPushSender server-side
CVE-2026-111761 5.8 MEDIUM A2A Java SDK has Server-Side Request Forgery (SSRF) in push-notification delivery
CVE-2026-111762 5.7 MEDIUM A2A Java SDK: Push notification credentials logged in cleartext on protobuf parse failure
CVE-2026-111763 5.7 MEDIUM A2A Java SDK send client credentials under server-controlled HTTP header name, enabling le
CVE-2026-113707 5.4 MEDIUM a2aproject a2a-rs inmemory.rs update race condition
CVE-2026-113706 3.5 LOW a2aproject a2a-rs inmemory.rs information disclosure

IV. Related Vulnerabilities

Same product: a2a-rs
Same vendor: a2aproject
Same weakness: CWE-209

V. Comments for CVE-2026-113705

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