{"id":"CVE-2002-1849","aliases":["EUVD-2002-1828","GHSA-jq4q-qcfh-gq3c"],"status":"published","title":"ParaChat Server 4.0 does not log users off if the browser's back button is used, which allows...","description":"ParaChat Server 4.0 does not log users off if the browser's back button is used, which allows remote attackers to cause a denial of service by repeatedly logging into a chat room, hitting the back button, then logging into the same chat room as a different user, which fills the chat room with invalid users.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.02539,"percentile":0.85061,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2002-12-31T05:00:00Z","modified":"2026-06-16T22:00:10Z","products":[{"vendor":"parachat","product":"parachat_server"}],"references":[{"url":"http://archives.neohapsis.com/archives/bugtraq/2002-07/0427.html","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","Exploit","Vendor Advisory"]},{"url":"http://www.iss.net/security_center/static/9735.php","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.securityfocus.com/bid/5370","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2002-1849"},{"url":"https://github.com/advisories/GHSA-jq4q-qcfh-gq3c"}],"sources":{"cve":[{"id":"CVE-2002-1849","description":"ParaChat Server 4.0 does not log users off if the browser's back button is used, which allows remote attackers to cause a denial of service by repeatedly logging into a chat room, hitting the back button, then logging into the same chat room as a different user, which fills the chat room with invalid users.","status":"published","published":"2005-06-28T04:00:00Z","modified":"2024-09-16T19:36:40.795Z","updated_at":"2026-11-02T14:33:54.972584Z"}],"euvd":[{"id":"EUVD-2002-1828","description":"ParaChat Server 4.0 does not log users off if the browser's back button is used, which allows remote attackers to cause a denial of service by repeatedly logging into a chat room, hitting the back button, then logging into the same chat room as a different user, which fills the chat room with invalid users.","status":"published","published":"2005-06-28T04:00:00Z","modified":"2024-09-16T19:36:40Z","updated_at":"2026-11-03T00:55:21.523281Z"}],"ghsa":[{"id":"GHSA-jq4q-qcfh-gq3c","title":"ParaChat Server 4.0 does not log users off if the browser's back button is used, which allows...","description":"ParaChat Server 4.0 does not log users off if the browser's back button is used, which allows remote attackers to cause a denial of service by repeatedly logging into a chat room, hitting the back button, then logging into the same chat room as a different user, which fills the chat room with invalid users.","status":"published","published":"2022-04-30T18:22:00Z","modified":"2023-01-30T05:05:54Z","updated_at":"2026-11-02T14:47:22.953418Z"}],"nvd":[{"id":"CVE-2002-1849","description":"ParaChat Server 4.0 does not log users off if the browser's back button is used, which allows remote attackers to cause a denial of service by repeatedly logging into a chat room, hitting the back button, then logging into the same chat room as a different user, which fills the chat room with invalid users.","status":"published","published":"2002-12-31T05:00:00Z","modified":"2026-06-16T22:00:10.263Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:00:43.239725Z"}]}}