---
title: "CVE-2026-113704: a2aproject a2a-rs - Server Side Request Forgery"
description: "a2aproject a2a-rs <= 0.4.3 contains a server-side request forgery caused by manipulation of TaskPushNotificationConfig in HttpPushSender component, letting remote attackers make arbitrary requests, exploit requires crafted input."
url: https://panop.io/threat-heartbeat/CVE-2026-113704/
---

# CVE-2026-113704 a2aproject a2a-rs - Server Side Request Forgery

a2aproject a2a-rs <= 0.4.3 contains a server-side request forgery caused by manipulation of TaskPushNotificationConfig in HttpPushSender component, letting remote attackers make arbitrary requests, exploit requires crafted input.

CVSS base score 7.3 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-113704)

## Details

Type

Server Side Request Forgery

Impact

Server Side Request Forgery

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Published

20 October 2026

Updated

21 October 2026

Weakness

[CWE-918](https://cwe.mitre.org/data/definitions/918.html)

## Vendor fix

Apply the patch 2ba50176ea9f222d9a7d0f0e8cfe6fae7cf4c224 or update to a version later than 0.4.3.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-113704](https://nvd.nist.gov/vuln/detail/CVE-2026-113704)
- [https://github.com/a2aproject/a2a-rs/](https://github.com/a2aproject/a2a-rs/)
- [https://github.com/a2aproject/a2a-rs/commit/2ba50176ea9f222d9a7d0f0e8cfe6fae7cf4c224](https://github.com/a2aproject/a2a-rs/commit/2ba50176ea9f222d9a7d0f0e8cfe6fae7cf4c224)
- [https://github.com/a2aproject/a2a-rs/pull/124](https://github.com/a2aproject/a2a-rs/pull/124)
- [https://vuldb.com/cve/CVE-2026-113704](https://vuldb.com/cve/CVE-2026-113704)
- [https://vuldb.com/submit/1014883](https://vuldb.com/submit/1014883)
- [https://vuldb.com/vuln/422865](https://vuldb.com/vuln/422865)
- [https://vuldb.com/vuln/422865/cti](https://vuldb.com/vuln/422865/cti)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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