The Adobe PDF XSS Vulnerability. If you host a PDF file anywhere on your site, you’re vulnerable to an XSS attack due to a bug in Acrobat Reader versions below 8. The fix is to serve PDFs as application/octet-stream to avoid them being displayed inline.
Recent articles
- Highlights from my appearance on the Data Renegades podcast with CL Kao and Dori Wilson - 26th November 2025
- Claude Opus 4.5, and why evaluating new LLMs is increasingly difficult - 24th November 2025
- sqlite-utils 4.0a1 has several (minor) backwards incompatible changes - 24th November 2025