---
id: CVE-2026-113705
title: a2aproject a2a-rs error.rs information exposure
summary: >-
  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 …
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-209
  - CWE-200
vendor: a2aproject
product: a2a-rs
affected:
  - a2a-rs 0.4.0
  - a2a-rs 0.4.1
  - a2a-rs 0.4.2
  - a2a-rs 0.4.3
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T22:45:09.343Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-113705'
references:
  - url: 'https://vuldb.com/vuln/422867'
    label: VDB-422867 | a2aproject a2a-rs error.rs information exposure
  - url: 'https://vuldb.com/vuln/422867/cti'
    label: 'VDB-422867 | CTI Indicators (IOB, IOC, TTP, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-113705'
    label: CVE-2026-113705 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/1014888'
    label: 'Submit #1014888 | a2aproject a2a-rs a2a-server-lf ≤ 0.4.3 CWE-209'
  - url: 'https://github.com/a2aproject/a2a-rs/pull/127'
  - url: >-
      https://github.com/a2aproject/a2a-rs/commit/713b943af94ab2d521d483b841618b97a2e78a4d
  - url: 'https://github.com/a2aproject/a2a-rs/'
tags:
  - cve.org
ingestedAt: '2026-10-20T23:33:47.233Z'
---

## Overview

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.

## Affected

- `a2a-rs 0.4.0`
- `a2a-rs 0.4.1`
- `a2a-rs 0.4.2`
- `a2a-rs 0.4.3`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.