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OpenAdvisories
High CVE-2026-16633 GHSA-hq66-cqwq-w95j

PDF.js: Arbitrary JavaScript execution upon opening a malicious PDF

Published Aug 6, 2026 · Updated Sep 10, 2026 · Assigned by GHSA

Description

### Impact

If PDF.js is used to load a malicious PDF, and PDF.js is configured with `enableScripting` set to true (which is the default value) and no CSP for disallowing script-src, unrestricted attacker-controlled JavaScript will be executed in the context of the hosting domain.

### Patches

### Workarounds
Set `enableScripting` to `false` or set a CSP.

Affected packages

EcosystemPackageAffectedFixedRecord
npm pdfjs-dist >= 5.6.83, < 6.2.108 6.2.108 GHSA-hq66-cqwq-w95j

References