Two vulnerabilities have been identified affecting SameSite cookie protections in Firefox and Thunderbird. CVE-2022-45410, published on December 22, 2022, impacts Firefox ESR versions below 102.5 and Thunderbird…
2 articles · Updated February 18, 2026
Recent Intelligence Reports
CVE-2022-45410 When a ServiceWorker intercepted a request with FetchEvent, the origin of the request was lost after the ServiceWorker took ownership of it. This had the effect of negating SameSite cookie protections. This was addressed in the spec and then in browsers. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.— Api.Msrc.Microsoft · February 18, 2026