{"id":"CVE-2026-109755","published":"2026-10-13T13:17:26Z","modified":"2026-10-15T20:17:08Z","title":"Sandbox escape in the DOM: Content Processes component","vendor":"Mozilla","product":"Firefox","tier":"core","eol":null,"description":{"text":"Sandbox escape in the DOM: Content Processes component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.","provenance":"source","from":"NVD"},"summary":{"text":"A sandbox escape flaw exists in the DOM: Content Processes component of Mozilla Firefox. An attacker who can get a user to interact with malicious content (for example, opening a crafted page) over the network with no prior authentication can break out of the content process sandbox.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:20:22Z"},"cvss":{"score":9.6,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.00338,"percentile":0.27193,"date":"2026-10-29","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":{"pulseCount":9,"pulses":[{"name":"Known_Cve | Oct 22, 2026 | Part 1/4","url":"https://otx.alienvault.com/pulse/6ad8d340ce8bef7ffa79b89b","created":"2026-10-21"},{"name":"Known_Cve | Oct 21, 2026 | Part 2/4","url":"https://otx.alienvault.com/pulse/6ad7813c340f998d3db4d0bb","created":"2026-10-20"},{"name":"Known_Cve | Oct 20, 2026 | Part 2/4","url":"https://otx.alienvault.com/pulse/6ad62f708ed98220bccde9c8","created":"2026-10-19"},{"name":"Known_Cve | Oct 19, 2026 | Part 2/4","url":"https://otx.alienvault.com/pulse/6ad4ddae89608f8a66f58915","created":"2026-10-18"},{"name":"Known_Cve | Oct 18, 2026 | Part 2/4","url":"https://otx.alienvault.com/pulse/6ad38c2e0aa0d5de6ee8bb52","created":"2026-10-17"},{"name":"Known_Cve | Oct 17, 2026 | Part 2/4","url":"https://otx.alienvault.com/pulse/6ad23ab69d40bd72818ecdae","created":"2026-10-16"},{"name":"Known_Cve | Oct 16, 2026 | Part 2/3","url":"https://otx.alienvault.com/pulse/6ad0e93a078e6220a69919cf","created":"2026-10-15"},{"name":"Known_Cve | Oct 15, 2026 | Part 2/3","url":"https://otx.alienvault.com/pulse/6acf9878b4135e4a2037eb34","created":"2026-10-14"},{"name":"Known_Cve | Oct 14, 2026 | Part 3/3","url":"https://otx.alienvault.com/pulse/6ace46861569c0833e65dba1","created":"2026-10-13"}],"provenance":"machine"},"cwes":[{"id":"CWE-693","name":"Protection Mechanism Failure"}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2068448","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-106/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-109/","tags":[]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2026-98516","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-98516","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[],"timeline":[{"date":"2026-10-13","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109755","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":14.4,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":5.44,"detail":"percentile 0.2719"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":2.27,"detail":"9 pulses"},{"name":"CVSS severity","points":6.72,"detail":"base score 9.6"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}