Browser Security

PDF.js Critical JavaScript Library Flaws Addressed: Update Urgently

Nishant Sharma

07 Feb 2026 — 1 min read

This newsletter is AI generated and may hallucinate sometimes 😊

Mozilla's PDF.js, a popular open-source JavaScript library widely used for in-browser PDF rendering, has addressed critical code injection and crash vulnerabilities.
The code injection flaw could enable attackers to execute arbitrary JavaScript code within a user's browser by exploiting specially crafted malicious PDF files.
Users of applications integrating PDF.js, including Firefox, are strongly advised to update to the latest patched version to mitigate risks of remote code execution and denial-of-service attacks.

Source: SecurityOnline.info | Date: February 06, 2026

References

“PDF” Poison: Popular JavaScript Library Patches Critical Injection and Crash Flaws - SecurityOnline.info

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References

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