{"apiVersion":"1.0","identifier":"CVE-2026-74960","description":"Site isolation issue in the WebExtensions component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.","publishedAt":"2026-08-18T13:17:33","lastModifiedAt":"2026-08-24T15:52:06","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74960","cvssScore":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","epssProbability":0.00164,"riskScore":0.82,"affectedProduct":"Firefox","affectedVersions":"<154","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74960","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74960","en":"https://www.redsauce.net/en/cves/CVE-2026-74960","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74960","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74960","de":"https://www.redsauce.net/de/cves/CVE-2026-74960","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74960","el":"https://www.redsauce.net/el/cves/CVE-2026-74960"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74960"}}