HIGHCVSS 8.6

CVE-2026-16633

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

Published: 2026-08-06
Modified: 2026-08-06
Aliases: GHSA-hq66-cqwq-w95j
Sources: github-advisory

Summary

### 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

Ecosystem	Package	Affected versions	Fixed versions
npm	pdfjs-dist	—	6.2.108

Remediation: Upgrade to 6.2.108 or later.

References

https://github.com/advisories/GHSA-hq66-cqwq-w95j

Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.

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