{"api_version":"1","generated_at":"2026-04-23T06:08:24+00:00","cve":"CVE-2022-21169","urls":{"html":"https://cve.report/CVE-2022-21169","api":"https://cve.report/api/cve/CVE-2022-21169.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2022-21169","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-21169"},"summary":{"title":"CVE-2022-21169","description":"The package express-xss-sanitizer before 1.1.3 are vulnerable to Prototype Pollution via the allowedTags attribute, allowing the attacker to bypass xss sanitization.","state":"PUBLIC","assigner":"report@snyk.io","published_at":"2022-09-26 05:15:00","updated_at":"2022-09-28 17:21:00"},"problem_types":["CWE-1321"],"metrics":[],"references":[{"url":"https://github.com/AhmedAdelFahim/express-xss-sanitizer/issues/4","name":"N/A","refsource":"CONFIRM","tags":[],"title":"XSS bypass by using prototype pollution · Issue #4 · AhmedAdelFahim/express-xss-sanitizer · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://security.snyk.io/vuln/SNYK-JS-EXPRESSXSSSANITIZER-3027443","name":"N/A","refsource":"CONFIRM","tags":[],"title":"Prototype Pollution in express-xss-sanitizer | CVE-2022-21169 | Snyk","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/AhmedAdelFahim/express-xss-sanitizer/commit/3bf8aaaf4dbb1c209dcb8d87a82711a54c1ab39a","name":"N/A","refsource":"CONFIRM","tags":[],"title":"fix XSS bypass by using prototype pollution issue. · AhmedAdelFahim/express-xss-sanitizer@3bf8aaa · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://runkit.com/embed/w306l6zfm7tu","name":"N/A","refsource":"CONFIRM","tags":[],"title":"RunKit","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-21169","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-21169","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"LEGACY","value":"Jayateertha Guruprasad","lang":""}],"nvd_cpes":[{"cve_year":"2022","cve_id":"21169","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"express_xss_sanitizer_project","cpe5":"express_xss_sanitizer","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"node.js","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_type":"CVE","data_format":"MITRE","data_version":"4.0","CVE_data_meta":{"ASSIGNER":"report@snyk.io","DATE_PUBLIC":"2022-09-26T05:00:10.103193Z","ID":"CVE-2022-21169","STATE":"PUBLIC","TITLE":"Prototype Pollution"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"express-xss-sanitizer","version":{"version_data":[{"version_affected":"<","version_value":"1.1.3"}]}}]},"vendor_name":"n/a"}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Prototype Pollution"}]}]},"references":{"reference_data":[{"refsource":"MISC","url":"https://security.snyk.io/vuln/SNYK-JS-EXPRESSXSSSANITIZER-3027443","name":"https://security.snyk.io/vuln/SNYK-JS-EXPRESSXSSSANITIZER-3027443"},{"refsource":"MISC","url":"https://github.com/AhmedAdelFahim/express-xss-sanitizer/issues/4","name":"https://github.com/AhmedAdelFahim/express-xss-sanitizer/issues/4"},{"refsource":"MISC","url":"https://runkit.com/embed/w306l6zfm7tu","name":"https://runkit.com/embed/w306l6zfm7tu"},{"refsource":"MISC","url":"https://github.com/AhmedAdelFahim/express-xss-sanitizer/commit/3bf8aaaf4dbb1c209dcb8d87a82711a54c1ab39a","name":"https://github.com/AhmedAdelFahim/express-xss-sanitizer/commit/3bf8aaaf4dbb1c209dcb8d87a82711a54c1ab39a"}]},"description":{"description_data":[{"lang":"eng","value":"The package express-xss-sanitizer before 1.1.3 are vulnerable to Prototype Pollution via the allowedTags attribute, allowing the attacker to bypass xss sanitization."}]},"impact":{"cvss":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P","baseScore":7.3,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"LOW"}},"credit":[{"lang":"eng","value":"Jayateertha Guruprasad"}]},"nvd":{"publishedDate":"2022-09-26 05:15:00","lastModifiedDate":"2022-09-28 17:21:00","problem_types":["CWE-1321"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.8,"impactScore":2.7}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:express_xss_sanitizer_project:express_xss_sanitizer:*:*:*:*:*:node.js:*:*","versionEndExcluding":"1.1.3","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}