What is CVE-2026-74956?
CVE-2026-74956 is a same-origin policy bypass vulnerability in the DOM: Service Workers component of Firefox. This flaw could allow an attacker to circumvent same-origin restrictions. Users must immediately update to Firefox 154, Firefox ESR 153.1, Thunderbird 154, or Thunderbird 153.1.
Azərbaycanca: CVE-2026-74956, Firefox-un DOM: Service Workers komponentində same-origin policy bypass zəifliyidir. Bu, təcavüzkara eyni mənşə məhdudiyyətlərini keçməyə imkan verə bilərdi. Problemi aradan qaldırmaq üçün dərhal Firefox 154, Firefox ESR 153.1, Thunderbird 154 və ya Thunderbird 153.1 versiyalarına yenilənməlidir.
FAQ2
Which products are affected by CVE-2026-74956?
This vulnerability affects the DOM: Service Workers component of Firefox. Users with affected versions must update to Firefox 154, Firefox ESR 153.1, Thunderbird 154, or Thunderbird 153.1.
How can I protect against CVE-2026-74956?
To protect against this vulnerability, you must immediately update to Firefox 154, Firefox ESR 153.1, Thunderbird 154, or Thunderbird 153.1.
See also6
This explainer is AI-written from source data — skopnix's own reporting on this CVE; CVSS scores, vendors and versions are never invented. See NVD for the official record.