{"cve":"CVE-2026-8390","nvd":{"published":"2026-05-12T14:17:12.050","modified":"2026-10-26T18:10:00.173","status":"Modified","description":"Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150.0.3.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","score":7.3},"cwes":["CWE-416","CWE-825"],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=2038081","https://www.mozilla.org/security/advisories/mfsa2026-45/","https://access.redhat.com/security/cve/CVE-2026-8390","https://bugzilla.redhat.com/show_bug.cgi?id=2476474","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8390.json"],"products":["mozilla:firefox"],"source":"nvd","synced_at":"2026-10-26T18:27:13.530666824+00:00"},"epss":{"cve":"CVE-2026-8390","score":0.00498,"percentile":0.42388,"date":"2026-10-26"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}