A type check was missing when handling fonts in PDF.js, which would allow arbitrary JavaScript execution in the PDF.js context. This vulnerability affects Firefox < 126, Firefox ESR < 115.11, and Thunderbird < 115.11.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| pdfjs-dist(npm) | 0 | 4.2.67 | N/A |
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