{"apiVersion":"1.0","identifier":"CVE-2026-74986","description":"Site isolation issue in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.","publishedAt":"2026-08-18T13:17:40","lastModifiedAt":"2026-08-25T16:11:58","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74986","cvssScore":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","epssProbability":0.00323,"riskScore":0.94,"affectedProduct":"Firefox","affectedVersions":"<154","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74986","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74986","en":"https://www.redsauce.net/en/cves/CVE-2026-74986","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74986","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74986","de":"https://www.redsauce.net/de/cves/CVE-2026-74986","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74986","el":"https://www.redsauce.net/el/cves/CVE-2026-74986"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74986"}}