{"id":"CVE-2018-12292","aliases":["EUVD-2018-4266","GHSA-r5hq-fqrw-h33h"],"status":"published","title":"A use-after-free vulnerability exists in DOMProxyHandler::EnsureExpandoObject in Pale Moon before...","description":"A use-after-free vulnerability exists in DOMProxyHandler::EnsureExpandoObject in Pale Moon before 27.9.3.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.08751,"percentile":0.95192,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-416"],"published":"2018-06-13T14:00:00Z","modified":"2026-06-17T01:37:29Z","exploits":[{"source":"exploitdb","id":"EDB-44900","title":"Pale Moon Browser \u003c 27.9.3 - Use After Free (PoC)","type":"local","platform":"windows","date":"2018-06-18","url":"https://www.exploit-db.com/exploits/44900"}],"products":[{"vendor":"palemoon","product":"pale_moon"}],"references":[{"url":"https://www.exploit-db.com/exploits/44900/","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://www.palemoon.org/releasenotes.shtml","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-12292"},{"url":"https://github.com/advisories/GHSA-r5hq-fqrw-h33h"}],"sources":{"cve":[{"id":"CVE-2018-12292","description":"A use-after-free vulnerability exists in DOMProxyHandler::EnsureExpandoObject in Pale Moon before 27.9.3.","status":"published","published":"2018-06-13T14:00:00Z","modified":"2024-08-05T08:30:59.836Z","updated_at":"2026-11-02T14:35:06.320867Z"}],"euvd":[{"id":"EUVD-2018-4266","description":"A use-after-free vulnerability exists in DOMProxyHandler::EnsureExpandoObject in Pale Moon before 27.9.3.","status":"published","published":"2018-06-13T14:00:00Z","modified":"2024-08-05T08:30:59Z","updated_at":"2026-11-03T02:39:53.14558Z"}],"ghsa":[{"id":"GHSA-r5hq-fqrw-h33h","title":"A use-after-free vulnerability exists in DOMProxyHandler::EnsureExpandoObject in Pale Moon before...","description":"A use-after-free vulnerability exists in DOMProxyHandler::EnsureExpandoObject in Pale Moon before 27.9.3.","status":"published","published":"2022-05-14T03:08:15Z","modified":"2023-02-02T05:07:38Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:52:33.427724Z"}],"nvd":[{"id":"CVE-2018-12292","description":"A use-after-free vulnerability exists in DOMProxyHandler::EnsureExpandoObject in Pale Moon before 27.9.3.","status":"published","published":"2018-06-13T14:29:00.337Z","modified":"2026-06-17T01:37:29.77Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:04:29.837913Z"}]}}