{"id":"CVE-2004-2226","aliases":["EUVD-2004-2218","GHSA-f2c7-j9r7-mm93"],"status":"published","title":"Mozilla Mail 1.7.1 and 1.7.3, and Thunderbird before 0.9, when HTML-Mails is enabled, allows...","description":"Mozilla Mail 1.7.1 and 1.7.3, and Thunderbird before 0.9, when HTML-Mails is enabled, allows remote attackers to determine valid e-mail addresses via an HTML e-mail that references a Cascading Style Sheets (CSS) document on the attacker's server.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0121,"percentile":0.68625,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2004-12-31T05:00:00Z","modified":"2026-06-16T22:09:15Z","products":[{"vendor":"mozilla","product":"thunderbird"}],"references":[{"url":"http://www.osvdb.org/11394","tags":["vdb-entry","x_refsource_OSVDB","x_transferred","Patch"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/17949","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://archives.neohapsis.com/archives/fulldisclosure/2004-11/0070.html","tags":["mailing-list","x_refsource_FULLDISC","x_transferred"]},{"url":"http://secunia.com/advisories/13086","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2004-2226"},{"url":"https://github.com/advisories/GHSA-f2c7-j9r7-mm93"}],"sources":{"cve":[{"id":"CVE-2004-2226","description":"Mozilla Mail 1.7.1 and 1.7.3, and Thunderbird before 0.9, when HTML-Mails is enabled, allows remote attackers to determine valid e-mail addresses via an HTML e-mail that references a Cascading Style Sheets (CSS) document on the attacker's server.","status":"published","published":"2005-07-17T04:00:00Z","modified":"2024-08-08T01:22:13.188Z","updated_at":"2026-11-02T14:34:53.357376Z"}],"euvd":[{"id":"EUVD-2004-2218","description":"Mozilla Mail 1.7.1 and 1.7.3, and Thunderbird before 0.9, when HTML-Mails is enabled, allows remote attackers to determine valid e-mail addresses via an HTML e-mail that references a Cascading Style Sheets (CSS) document on the attacker's server.","status":"published","published":"2005-07-17T04:00:00Z","modified":"2024-08-08T01:22:13Z","updated_at":"2026-11-03T01:15:11.292024Z"}],"ghsa":[{"id":"GHSA-f2c7-j9r7-mm93","title":"Mozilla Mail 1.7.1 and 1.7.3, and Thunderbird before 0.9, when HTML-Mails is enabled, allows...","description":"Mozilla Mail 1.7.1 and 1.7.3, and Thunderbird before 0.9, when HTML-Mails is enabled, allows remote attackers to determine valid e-mail addresses via an HTML e-mail that references a Cascading Style Sheets (CSS) document on the attacker's server.","status":"published","published":"2022-04-29T03:01:02Z","modified":"2023-01-30T05:04:03Z","updated_at":"2026-11-02T14:46:57.954925Z"}],"nvd":[{"id":"CVE-2004-2226","description":"Mozilla Mail 1.7.1 and 1.7.3, and Thunderbird before 0.9, when HTML-Mails is enabled, allows remote attackers to determine valid e-mail addresses via an HTML e-mail that references a Cascading Style Sheets (CSS) document on the attacker's server.","status":"published","published":"2004-12-31T05:00:00Z","modified":"2026-06-16T22:09:15.947Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:00:52.459805Z"}]}}