| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 129.0 | 129.0 |
| firefox esr | ≥ 116.0, < 128.1< 115.14 | 128.1115.14 |
Firefox adds web-compatibility shims in place of some tracking scripts blocked by Enhanced Tracking Protection. On a site protected by Content Security Policy in "strict-dynamic" mode, an attacker able to inject an HTML element could have used a DOM Clobbering attack on some of the shims and achieved XSS, bypassing the CSP strict-dynamic protection. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, and Firefox ESR < 128.1.
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