If a document created a sandboxed iframe without <code>allow-scripts</code>, and subsequently appended an element to the iframe's document that e.g. had a JavaScript event handler - the event handler would have run despite the iframe's sandbox. This vulnerability affects Firefox < 97, Thunderbird < 91.6, and Firefox ESR < 91.6.
2022-12-22T20:15:19.410
2025-04-16T15:15:49.293
Modified
CVSSv3.1: 9.6 (CRITICAL)
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Application | mozilla | firefox | < 97.0 | Yes |
Application | mozilla | firefox_esr | < 91.6 | Yes |
Application | mozilla | thunderbird | < 91.6 | Yes |