The PDF viewer does not sufficiently sanitize PostScript calculator functions, allowing malicious JavaScript to be injected through a crafted PDF file. This JavaScript can then be run with the permissions of the PDF viewer by its worker. This vulnerability affects Firefox ESR < 52.8 and Firefox < 60.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| pdfjs-dist(npm) | 2.0.0 | 2.0.550 | N/A |
| pdfjs-dist(npm) | 0 | 1.10.100 | N/A |
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