| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 52.8.0< 60.0 | 52.8.060.0 |
Same-origin protections for the PDF viewer can be bypassed, allowing a malicious site to intercept messages meant for the viewer. This could allow the site to retrieve PDF files restricted to viewing by an authenticated user on a third-party website. This vulnerability affects Firefox ESR < 52.8 and Firefox < 60.
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