GitHub Advisoryadvisory · npm

GHSA-hq66-cqwq-w95j PDF.js: Arbitrary JavaScript execution upon opening a malicious PDF

HIGH Published 2026-08-06 Modified 2026-08-06 Official page ↗
Aliases
CVE-2026-16633
Ecosystem
npm
Packages
pdfjs-dist
Severity
High
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Weaknesses
CWE-79
Reviewed
2026-08-06

Affected packages

• npm pdfjs-dist: >= 5.6.83, < 6.2.108 → fixed in 6.2.108

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.

Related

Alias · not in database (1)

Weakness · CWE (1)

  • CWE-79 Improper Neutralization of Input During Web Page Generation weakness

References