Astra Linux – Vulnerability in Firefox and Thunderbird

If an attacker could control the contents of an iframe that was sandboxed using allow-popups but not allow-scripts, they could create a link that, when clicked, would cause JavaScript execution, violating the sandboxing rules. This vulnerability affects Firefox 98, Firefox ESR 91.7, and Thunderbi...

Mozilla: CSP sandbox header without `allow-scripts` can be bypassed via retargeted javascript: URI

The Mozilla Foundation Security Advisory describes this flaw as: An iframe that was not permitted to run scripts could do so if the user clicked on a javascript: link...

Mozilla: iframe allow-scripts sandbox bypass

The Mozilla Foundation Security Advisory describes this flaw as: If an attacker could control the contents of an iframe sandboxed with allow-popups but not allow-scripts, they were able to craft a link that, when clicked, would lead to JavaScript execution in violation of the sandbox...