Information Exposure Affecting @a2ui/web_core package, versions <0.12.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published28 Oct 2026
- disclosed28 Oct 2026
- creditez-lbz
Introduced: 28 Oct 2026
NewCVE-2026-118272 (opens in a new tab)How to fix?
Upgrade @a2ui/web_core to version 0.12.0 or higher.
Overview
@a2ui/web_core is an A2UI Core Library
Affected versions of this package are vulnerable to Information Exposure via DataContext.dispatchExpressionError in data-context.ts, which attaches the raw V8 execution stack trace (e.stack) to error events dispatched through surface.onError. When an unhandled runtime error or native exception (such as RangeError or TypeError) occurs during expression evaluation, all subscribers receive an error event containing internal filesystem paths, directory structures, and SDK line numbers.