CVE-2026-16349

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Same-origin policy bypass in the DOM: Navigation component...

CVE-2026-16349

Same-origin policy bypass in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13...

Mozilla Firefox ESR < 115.38

The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 115.38. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-69 advisory. - We are aware that exploit code for this is public however we are not aware of any attacks in the wild...