{"id":"CVE-2008-3843","aliases":["EUVD-2008-3829","GHSA-35fc-6m3p-h4pm"],"status":"published","title":"Request Validation (aka the ValidateRequest filters) in ASP.NET in Microsoft .NET Framework with...","description":"Request Validation (aka the ValidateRequest filters) in ASP.NET in Microsoft .NET Framework with the MS07-040 update does not properly detect dangerous client input, which allows remote attackers to conduct cross-site scripting (XSS) attacks, as demonstrated by a query string containing a \"\u003c~/\" (less-than tilde slash) sequence followed by a crafted STYLE element.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.21991,"percentile":0.97677,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2008-08-27T20:00:00Z","modified":"2026-06-16T22:56:39Z","products":[{"vendor":"microsoft","product":".net_framework"}],"references":[{"url":"http://www.securityfocus.com/archive/1/496071/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/44743","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.procheckup.com/PDFs/bypassing-dot-NET-ValidateRequest.pdf","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://securityreason.com/securityalert/4193","tags":["third-party-advisory","x_refsource_SREASON","x_transferred"]},{"url":"http://www.securityfocus.com/archive/1/495667/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://www.procheckup.com/Vulnerability_PR08-20.php","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2008-3843"},{"url":"https://github.com/advisories/GHSA-35fc-6m3p-h4pm"}],"sources":{"cve":[{"id":"CVE-2008-3843","description":"Request Validation (aka the ValidateRequest filters) in ASP.NET in Microsoft .NET Framework with the MS07-040 update does not properly detect dangerous client input, which allows remote attackers to conduct cross-site scripting (XSS) attacks, as demonstrated by a query string containing a \"\u003c~/\" (less-than tilde slash) sequence followed by a crafted STYLE element.","status":"published","published":"2008-08-27T20:00:00Z","modified":"2024-08-07T09:53:00.395Z","updated_at":"2026-11-02T14:34:45.504702Z"}],"euvd":[{"id":"EUVD-2008-3829","description":"Request Validation (aka the ValidateRequest filters) in ASP.NET in Microsoft .NET Framework with the MS07-040 update does not properly detect dangerous client input, which allows remote attackers to conduct cross-site scripting (XSS) attacks, as demonstrated by a query string containing a \"\u003c~/\" (less-than tilde slash) sequence followed by a crafted STYLE element.","status":"published","published":"2008-08-27T20:00:00Z","modified":"2024-08-07T09:53:00Z","updated_at":"2026-11-03T01:38:50.380359Z"}],"ghsa":[{"id":"GHSA-35fc-6m3p-h4pm","title":"Request Validation (aka the ValidateRequest filters) in ASP.NET in Microsoft .NET Framework with...","description":"Request Validation (aka the ValidateRequest filters) in ASP.NET in Microsoft .NET Framework with the MS07-040 update does not properly detect dangerous client input, which allows remote attackers to conduct cross-site scripting (XSS) attacks, as demonstrated by a query string containing a \"\u003c~/\" (less-than tilde slash) sequence followed by a crafted STYLE element.","status":"published","published":"2022-05-02T00:04:14Z","modified":"2023-01-31T05:06:22Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:49:01.018652Z"}],"nvd":[{"id":"CVE-2008-3843","description":"Request Validation (aka the ValidateRequest filters) in ASP.NET in Microsoft .NET Framework with the MS07-040 update does not properly detect dangerous client input, which allows remote attackers to conduct cross-site scripting (XSS) attacks, as demonstrated by a query string containing a \"\u003c~/\" (less-than tilde slash) sequence followed by a crafted STYLE element.","status":"published","published":"2008-08-27T20:41:00Z","modified":"2026-06-16T22:56:39.203Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:01:27.800088Z"}]}}