{"id":"CVE-2010-4508","aliases":["EUVD-2010-4476","GHSA-3pfw-5mj7-cxfg"],"status":"published","title":"The WebSockets implementation in Mozilla Firefox 4 through 4.0 Beta 7 does not properly perform...","description":"The WebSockets implementation in Mozilla Firefox 4 through 4.0 Beta 7 does not properly perform proxy upgrade negotiation, which has unspecified impact and remote attack vectors, related to an \"inherent problem\" with the WebSocket specification.","severity":{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01274,"percentile":0.70099,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2010-12-09T19:00:00Z","modified":"2026-06-16T23:24:56Z","products":[{"vendor":"mozilla","product":"firefox"}],"references":[{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12251","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"http://osvdb.org/69758","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred"]},{"url":"https://wiki.mozilla.org/Platform/2010-12-07","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2010-4508"},{"url":"https://github.com/advisories/GHSA-3pfw-5mj7-cxfg"}],"sources":{"cve":[{"id":"CVE-2010-4508","description":"The WebSockets implementation in Mozilla Firefox 4 through 4.0 Beta 7 does not properly perform proxy upgrade negotiation, which has unspecified impact and remote attack vectors, related to an \"inherent problem\" with the WebSocket specification.","status":"published","published":"2010-12-09T19:00:00Z","modified":"2024-08-07T03:51:17.284Z","updated_at":"2026-11-02T14:33:28.50039Z"}],"euvd":[{"id":"EUVD-2010-4476","description":"The WebSockets implementation in Mozilla Firefox 4 through 4.0 Beta 7 does not properly perform proxy upgrade negotiation, which has unspecified impact and remote attack vectors, related to an \"inherent problem\" with the WebSocket specification.","status":"published","published":"2010-12-09T19:00:00Z","modified":"2024-08-07T03:51:17Z","updated_at":"2026-11-03T01:39:30.072311Z"}],"ghsa":[{"id":"GHSA-3pfw-5mj7-cxfg","title":"The WebSockets implementation in Mozilla Firefox 4 through 4.0 Beta 7 does not properly perform...","description":"The WebSockets implementation in Mozilla Firefox 4 through 4.0 Beta 7 does not properly perform proxy upgrade negotiation, which has unspecified impact and remote attack vectors, related to an \"inherent problem\" with the WebSocket specification.","status":"published","published":"2022-05-17T01:03:04Z","modified":"2023-02-03T05:03:05Z","updated_at":"2026-11-02T14:53:17.668091Z"}],"nvd":[{"id":"CVE-2010-4508","description":"The WebSockets implementation in Mozilla Firefox 4 through 4.0 Beta 7 does not properly perform proxy upgrade negotiation, which has unspecified impact and remote attack vectors, related to an \"inherent problem\" with the WebSocket specification.","status":"published","published":"2010-12-09T20:00:17.93Z","modified":"2026-06-16T23:24:56.7Z","cvss":[{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:02:00.37682Z"}]}}