{"affected":[{"product":"Firefox","source":"CNA: mozilla","vendor":"Mozilla","versions":[{"lessThanOrEqual":"153.*","status":"unaffected","version":"153.7","versionType":"rpm"},{"lessThanOrEqual":"*","status":"unaffected","version":"160","versionType":"rpm"}]}],"cveId":"CVE-2026-124939","cwes":[],"description":"JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 160 and Firefox ESR 153.7.","epss":null,"exploits":[],"kev":null,"metrics":[],"modifiedAt":1794317326139,"publishedAt":1794317326139,"references":[{"source":"CNA: mozilla","tags":[],"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2076663"},{"source":"CNA: mozilla","tags":[],"url":"https://www.mozilla.org/security/advisories/mfsa2026-125/"},{"source":"CNA: mozilla","tags":[],"url":"https://www.mozilla.org/security/advisories/mfsa2026-127/"}],"remediation":[],"revision":"4c0567451e3774e3535f843f54191121ffc5b49df41231502bceb669f51141da","sources":[{"modifiedAt":1794317326139,"name":"CNA: mozilla","retrievedAt":1794319834890,"url":"https://www.cve.org/CVERecord?id=CVE-2026-124939"}],"ssvc":null,"status":"published","title":"JIT miscompilation in the JavaScript Engine: JIT component","updatedAt":1794319834890}