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CVE-2026-113704— a2aproject a2a-rs Push Notification push_notification_sender.rs HttpPushSender server-side request forgery

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 及更早版本）中发现了一个漏洞。该漏洞影响组件“推送通知处理器”中文件 里的 函数。攻击者可通过恶意操纵 参数，引发服务器端请求伪造（SSRF）。该攻击可从远程发起。建议应用补丁（提交哈希： ）以修复此问题。

CVSS 7.3 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-113704

Vulnerability Information
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Vulnerability Title
a2aproject a2a-rs Push Notification push_notification_sender.rs HttpPushSender server-side request forgery
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been found in a2aproject a2a-rs up to 0.4.3. This affects the function HttpPushSender of the file crates/server/src/push_notification_sender.rs of the component Push Notification Handler. Such manipulation of the argument TaskPushNotificationConfig leads to server-side request forgery. The attack may be launched remotely. The name of the patch is 2ba50176ea9f222d9a7d0f0e8cfe6fae7cf4c224. Applying a patch is advised to resolve 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:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
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-2026-113704

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III. Intelligence Information for CVE-2026-113704

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Patches & Fixes for CVE-2026-113704 (1)

Vendor Pages for CVE-2026-113704 (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-2026-111761 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-2026-113705 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-918

V. Comments for CVE-2026-113704

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