{"cve":"CVE-2026-109780","nvd":{"published":"2026-10-13T13:17:28.917","modified":"2026-10-13T19:18:42.560","status":"Deferred","description":"Mitigation bypass in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=2072775","https://www.mozilla.org/security/advisories/mfsa2026-106/","https://www.mozilla.org/security/advisories/mfsa2026-109/"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:58:52.678897993+00:00"},"epss":{"cve":"CVE-2026-109780","score":0.00198,"percentile":0.09512,"date":"2026-10-25"},"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."]}