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CVE-2026-118538— a2ui-project a2ui Renderer root.js Root.renderComponentTree dynamically-determined object attributes

Quick assessment

Affected

a2ui-project a2ui

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 a2ui-project 的 a2ui 组件（版本 0.12.0 及以下）中发现了一个漏洞。该问题影响组件 Renderer 中文件 src/0.8/ui/root.js 的 Root.renderComponentTree 函数。攻击者通过执行恶意操作，可能引发动态确定的对象属性问题。该攻击可远程发起。用于修复此问题的拉取请求（Pull Request）目前仍在等待审核接受。

CVSS 5.5 · Medium Updated Oct 29, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

a2ui-project a2ui Renderer root.js Root.renderComponentTree dynamically-determined object attributes

Source: CVE Program / CVE List V5

Vulnerability Description

A vulnerability was determined in a2ui-project a2ui up to 0.12.0. This issue affects the function Root.renderComponentTree of the file src/0.8/ui/root.js of the component Renderer. Executing a manipulation can lead to dynamically-determined object attributes. The attack may be launched remotely. The pull request to fix this issue awaits acceptance.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

CWE-915

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
a2ui-project	a2ui	0.1	`cpe:2.3:a:a2ui-project:a2ui::::::::`

II. Public POCs for CVE-2026-118538

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-118538

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Patches & Fixes for CVE-2026-118538 (1)

fix(lit): restrict custom component property assignment in v0.8 Root (#3076) by Varun-S10 · Pull Request #3107 · a2ui-project/a2ui issue-tracking patch

Proof of Concept for CVE-2026-118538 (1)

[BUG]: Legacy Lit renderer spreads server-controlled property names verbatim onto elements (`el[prop] = val`) · Issue #3076 · a2ui-project/a2ui issue-tracking

https://www.cve.org/CVERecord?id=CVE-2026-118538

Same Patch Batch · a2ui-project · 2026-10-28 · 7 CVEs total

CVE-2026-118275	5.3 MEDIUM	a2ui-project a2ui Resolver data-context.ts DataContext.resolveSignal resource consumption
CVE-2026-118271	4.3 MEDIUM	a2ui-project a2ui data-context Resolver data-context.ts resource consumption
CVE-2026-118272	4.3 MEDIUM	a2ui-project a2ui Error data-context.ts DataContext.dispatchExpressionError information ex
CVE-2026-118273	4.3 MEDIUM	a2ui-project a2ui data-model.ts DataModel.set resource consumption
CVE-2026-118274	4.3 MEDIUM	a2ui-project a2ui Binder generic-binder.ts resource consumption
CVE-2026-118276	3.5 LOW	a2ui-project a2ui Parser expression_parser.ts formatString resource consumption

IV. Related Vulnerabilities

Same product: a2ui

Same vendor: a2ui-project

Same weakness: CWE-915