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CVE-2021-43543

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Description

Documents loaded with the CSP sandbox directive could have escaped the sandbox’s script restriction by embedding additional content. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

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General Information

Vendors

  • Mozilla

Products

  • Thunderbird,
  • Firefox ESR,
  • Firefox
Technical Analysis