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CVE-2026-113707— a2aproject a2a-rs inmemory.rs update race condition

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 0.4.4 及之前）中发现了一个安全漏洞。受影响的组件是文件 中的 函数。该问题由竞态条件（race condition）引发，攻击者可从远程实施利用。已识别的修复补丁为提交 。建议尽快应用该补丁以修复此问题。

CVSS 5.4 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-113707

Vulnerability Information
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Vulnerability Title
a2aproject a2a-rs inmemory.rs update race condition
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in a2aproject a2a-rs up to 0.4.4. The affected element is the function InMemoryTaskStore::update of the file a2a-server/src/task_store/inmemory.rs. The manipulation results in race condition. The attack may be performed from remote. The patch is identified as 7050c7d329238539424ee46440e23b91c4825bee. It is advisable to implement a patch to correct this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
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-2026-113707

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-113707

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Patches & Fixes for CVE-2026-113707 (2)

Vendor Pages for CVE-2026-113707 (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-2026-113705 5.3 MEDIUM a2aproject a2a-rs error.rs information exposure
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-362

V. Comments for CVE-2026-113707

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