{"id":"CVE-2009-3421","aliases":["EUVD-2009-3403","GHSA-9x4q-26cx-fr52"],"status":"published","title":"login.php in Zenas PaoBacheca Guestbook 2.1, when register_globals is enabled, allows remote...","description":"login.php in Zenas PaoBacheca Guestbook 2.1, when register_globals is enabled, allows remote attackers to bypass authentication and gain administrative access by setting the login_ok parameter to 1.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.04989,"percentile":0.92277,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-287"],"published":"2009-09-25T22:00:00Z","modified":"2026-06-16T23:11:34Z","exploits":[{"source":"exploitdb","id":"EDB-9293","title":"PaoBacheca Guestbook 2.1 - 'login_ok' Authentication Bypass","type":"webapps","platform":"php","date":"2009-07-28","verified":true,"url":"https://www.exploit-db.com/exploits/9293"}],"products":[{"vendor":"zenas","product":"pao-bacheca_guestbook"}],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/52100","tags":["vdb-entry","x_refsource_XF","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://www.exploit-db.com/exploits/9293","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://www.osvdb.org/56757","tags":["vdb-entry","x_refsource_OSVDB","x_transferred","Broken Link","Exploit"]},{"url":"http://secunia.com/advisories/36023","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Broken Link","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-3421"},{"url":"https://github.com/advisories/GHSA-9x4q-26cx-fr52"}],"sources":{"cve":[{"id":"CVE-2009-3421","description":"login.php in Zenas PaoBacheca Guestbook 2.1, when register_globals is enabled, allows remote attackers to bypass authentication and gain administrative access by setting the login_ok parameter to 1.","status":"published","published":"2009-09-25T22:00:00Z","modified":"2024-08-07T06:31:09.668Z","updated_at":"2026-11-02T14:33:24.10565Z"}],"euvd":[{"id":"EUVD-2009-3403","description":"login.php in Zenas PaoBacheca Guestbook 2.1, when register_globals is enabled, allows remote attackers to bypass authentication and gain administrative access by setting the login_ok parameter to 1.","status":"published","published":"2009-09-25T22:00:00Z","modified":"2024-08-07T06:31:09Z","updated_at":"2026-11-03T01:39:13.693198Z"}],"ghsa":[{"id":"GHSA-9x4q-26cx-fr52","title":"login.php in Zenas PaoBacheca Guestbook 2.1, when register_globals is enabled, allows remote...","description":"login.php in Zenas PaoBacheca Guestbook 2.1, when register_globals is enabled, allows remote attackers to bypass authentication and gain administrative access by setting the login_ok parameter to 1.","status":"published","published":"2022-05-02T03:45:05Z","modified":"2026-03-20T05:01:28Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:06:43.427844Z"}],"nvd":[{"id":"CVE-2009-3421","description":"login.php in Zenas PaoBacheca Guestbook 2.1, when register_globals is enabled, allows remote attackers to bypass authentication and gain administrative access by setting the login_ok parameter to 1.","status":"published","published":"2009-09-25T22:30:16.03Z","modified":"2026-06-16T23:11:34.24Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:01:36.596719Z"}]}}