CVE-2026-118276— a2ui-project a2ui Parser expression_parser.ts formatString resource consumption

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 0.10.6 及以下）中发现了一个安全漏洞。该漏洞影响文件中 Parser 组件的函数。攻击者可通过远程方式利用该漏洞，引发资源消耗问题。目前该漏洞的利用方式已公开披露，存在被恶意利用的风险。建议通过应用补丁（补丁标识：）来修复此问题。

CVSS 3.5 · Low Updated Oct 28, 2026

Possible ATT&CK Techniques 2 AI

T1499 · Endpoint Denial of Service T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

a2ui-project a2ui Parser expression_parser.ts formatString resource consumption

Source: CVE Program / CVE List V5

Vulnerability Description

A vulnerability was determined in a2ui-project a2ui up to 0.10.6. This vulnerability affects the function formatString of the file renderers/web_core/src/v0_9/basic_catalog/expressions/expression_parser.ts of the component Parser. This manipulation causes resource consumption. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: 1f71d1aac1b145ef57c7526f9e0cff316f5934e2. Applying a patch is the recommended action to fix this issue.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

未加控制的资源消耗(资源穷尽)

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
a2ui-project	a2ui	0.10.0	`cpe:2.3:a:a2ui-project:a2ui::::::::`

II. Public POCs for CVE-2026-118276

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-118276

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Other References for CVE-2026-118276 (7)

https://github.com/a2ui-project/a2ui/pull/2433 issue-tracking patch
https://github.com/a2ui-project/a2ui/issues/2389 exploit issue-tracking
https://github.com/a2ui-project/a2ui/commit/1f71d1aac1b145ef57c7526f9e0cff316f5934e2 patch
https://vuldb.com/cve/CVE-2026-118276 third-party-advisory
https://vuldb.com/vuln/427574/cti signature permissions-required
https://vuldb.com/submit/1015139 third-party-advisory
https://vuldb.com/vuln/427574 vdb-entry technical-description

https://www.cve.org/CVERecord?id=CVE-2026-118276

Same Patch Batch · a2ui-project · 2026-10-28 · 6 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

IV. Related Vulnerabilities

Same product: a2ui

Same vendor: a2ui-project

Same weakness: CWE-400