.x and 4.x, and Netscape 2.x, 3.x and 4.x, allows remote attackers to monitor a user's web activities, aka the Bell Labs vulnerability. NIST National Vulnerability Database (NVD) -- services.nvd.nist.gov (CVE / CVSS / CPE). {"cve":{"id":"CVE-1999-0031","sourceIdentifier":"cve@mitre.org","published":"1997-07-08T04:00:00.000","lastModified":"2026-06-16T21:47:23.630","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"JavaScript in Internet Explorer 3.x and 4.x, and Netscape 2.x, 3.x and 4.x, allows remote attackers to monitor a user's web activities, aka the Bell Labs vulnerability."}],"affected":[{"source":"cve@mitre.org","affectedData":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]}],"metrics":{"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:H/Au:N/C:P/I:N/A:N","baseScore":2.6,"accessVector":"NETWORK","accessComplexity":"HIGH","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"NONE"},"baseSeverity":"LOW","exploitabilityScore":4.9,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-Other"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:internet_explorer:3.0:*:*:*:*:*:*:*","matchCriteriaId":"1BBF9241-A175-438C-A793-3D245BE2AE35"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:internet_explorer:4.0:*:*:*:*:*:*:*","matchCriteriaId":"A5B815D9-BC21-4A17-AF00-B8AD181027D7"},{"vulnerable":true,"criteria":"cpe:2.3:a:netscape:communicator:2.0:*:*:*:*:*:*:*","matchCriteriaId":"7144D163-CD3D-4E57-83D9-FB164C65E06E"},{"vulnerable":true,"criteria":"cpe:2.3:a:netscape:communicator:3.0:*:*:*:*:*:*:*","matchCriteriaId":"7CD558FC-D1D7-4092-9A05-B174CA06675D"},{"vulnerable":true,"criteria":"cpe:2.3:a:netscape:communicator:4.0:*:*:*:*:*:*:*","matchCriteriaId":"209C7BB1-EFDF-43AB-9FB6-DF67465DEAEF"}]}]}],"references":[{"url":"http://www.codetalker.com/advisories/vendor/hp/hpsbux9707-065.html","source":"cve@mitre.org","tags":["URL Repurposed"]},{"url":"http://www.codetalker.com/advisories/vendor/hp/hpsbux9707-065.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["URL Repurposed"]}]}},