CVE-2026-103418 — Universal XSS via the HTML language attribute in Translation Services
Firefox for iOS directly interpolated the page’s HTML language attribute into translation JavaScript, allowing attacker-controlled markup to execute code in Firefox’s privileged…
Published: 2026-10-13 · CVSS: 8.8 · CVSS 3.1
Firefox for iOS directly interpolated the page’s HTML language attribute into translation JavaScript, allowing attacker-controlled markup to execute code in Firefox’s privileged content world and bypass the page’s Content Security Policy. This vulnerability was fixed in Firefox for iOS 157.1.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7