---
id: CVE-2026-118272
title: >-
  a2ui-project a2ui Error data-context.ts DataContext.dispatchExpressionError
  information exposure
summary: >-
  A vulnerability was detected in a2ui-project a2ui up to 0.10.6. Affected is
  the function DataContext.dispatchExpressionError of the file
  renderers/web_core/src/v0_9/rendering/data-context.ts of the component Error
  Handler. Performing a m…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-209
  - CWE-200
vendor: a2ui-project
product: a2ui
affected:
  - a2ui 0.10.0
  - a2ui 0.10.1
  - a2ui 0.10.2
  - a2ui 0.10.3
  - a2ui 0.10.4
  - a2ui 0.10.5
  - a2ui 0.10.6
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-28T15:57:46.624255Z'
exploitAvailable: true
published: '2026-10-28'
updated: '2026-10-28'
sourceUpdated: '2026-10-28T16:12:32.352Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-118272'
references:
  - url: 'https://vuldb.com/vuln/427570'
    label: >-
      VDB-427570 | a2ui-project a2ui Error data-context.ts
      DataContext.dispatchExpressionError information exposure
  - url: 'https://vuldb.com/vuln/427570/cti'
    label: 'VDB-427570 | CTI Indicators (IOB, IOC, TTP, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-118272'
    label: CVE-2026-118272 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/1015116'
    label: 'Submit #1015116 | a2ui-project a2ui <=0.10.6 CWE-209'
  - url: 'https://github.com/a2ui-project/a2ui/issues/2385'
  - url: 'https://github.com/a2ui-project/a2ui/pull/2429'
  - url: >-
      https://github.com/a2ui-project/a2ui/commit/8f149a1c7b0ce1fa8e93ac3adfa5fda960faeb01
  - url: 'https://github.com/a2ui-project/a2ui/'
tags:
  - cve.org
  - exploit-available
epss: 0.00248
epssPercentile: 0.16179
ingestedAt: '2026-10-28T03:02:57.636Z'
---

## Overview

A vulnerability was detected in a2ui-project a2ui up to 0.10.6. Affected is the function DataContext.dispatchExpressionError of the file renderers/web_core/src/v0_9/rendering/data-context.ts of the component Error Handler. Performing a manipulation results in information exposure through error message. It is possible to initiate the attack remotely. The exploit is now public and may be used. The patch is named 8f149a1c7b0ce1fa8e93ac3adfa5fda960faeb01. It is suggested to install a patch to address this issue.

## Affected

- `a2ui 0.10.0`
- `a2ui 0.10.1`
- `a2ui 0.10.2`
- `a2ui 0.10.3`
- `a2ui 0.10.4`
- `a2ui 0.10.5`
- `a2ui 0.10.6`

## Remediation

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