CVE-2021-3377

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "The npm package ansi_up converts ANSI escape codes into HTML. In ansi_up v4, ANSI escape codes can be used to create HTML hyperlinks. Due to insufficient URL sanitization, this feature is affected by a cross-site scripting (XSS) vulnerability. This issue is fixed in v5.0.0."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-03-05T19:03:58.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://doyensec.com/resources/Doyensec_Advisory_ansi_up4_XSS.pdf"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/drudru/ansi_up/commit/c8c726ed1db979bae4f257b7fa41775155ba2e27"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2021-3377", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "The npm package ansi_up converts ANSI escape codes into HTML. In ansi_up v4, ANSI escape codes can be used to create HTML hyperlinks. Due to insufficient URL sanitization, this feature is affected by a cross-site scripting (XSS) vulnerability. This issue is fixed in v5.0.0."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://doyensec.com/resources/Doyensec_Advisory_ansi_up4_XSS.pdf", "refsource": "MISC", "url": "https://doyensec.com/resources/Doyensec_Advisory_ansi_up4_XSS.pdf"}, {"name": "https://github.com/drudru/ansi_up/commit/c8c726ed1db979bae4f257b7fa41775155ba2e27", "refsource": "MISC", "url": "https://github.com/drudru/ansi_up/commit/c8c726ed1db979bae4f257b7fa41775155ba2e27"}]}}}, "adp": [{"title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://doyensec.com/resources/Doyensec_Advisory_ansi_up4_XSS.pdf"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/drudru/ansi_up/commit/c8c726ed1db979bae4f257b7fa41775155ba2e27"}, {"url": "https://security.netapp.com/advisory/ntap-20241108-0002/"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T21:44:49.008Z"}}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2021-3377", "datePublished": "2021-03-05T19:03:58.000Z", "dateReserved": "2021-02-01T00:00:00.000Z", "dateUpdated": "2025-11-03T21:44:49.008Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.2"}

{}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ansi_up_project:ansi_up:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "72350660-79B9-4D4C-8F06-70A88AE1C3AC", "versionEndExcluding": "5.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The npm package ansi_up converts ANSI escape codes into HTML. In ansi_up v4, ANSI escape codes can be used to create HTML hyperlinks. Due to insufficient URL sanitization, this feature is affected by a cross-site scripting (XSS) vulnerability. This issue is fixed in v5.0.0."}, {"lang": "es", "value": "El paquete npm ansi_up convierte los c\u00f3digos de escape ANSI en HTML. En ansi_up versi\u00f3n v4, los c\u00f3digos de escape ANSI pueden ser usados para crear hiperv\u00ednculos HTML. Debido a un saneamiento insuficiente de la URL, esta funcionalidad est\u00e1 afectada por una vulnerabilidad de tipo cross-site scripting (XSS). Este problema es corregido en versi\u00f3n v5.0.0"}], "id": "CVE-2021-3377", "lastModified": "2026-06-17T04:05:00.207", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-03-05T21:15:13.263", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://doyensec.com/resources/Doyensec_Advisory_ansi_up4_XSS.pdf"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/drudru/ansi_up/commit/c8c726ed1db979bae4f257b7fa41775155ba2e27"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://doyensec.com/resources/Doyensec_Advisory_ansi_up4_XSS.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/drudru/ansi_up/commit/c8c726ed1db979bae4f257b7fa41775155ba2e27"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.netapp.com/advisory/ntap-20241108-0002/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2021:3016", "cpe": "cpe:/a:redhat:acm:2.3::el8", "impact": "low", "package": "rhacm2/kui-web-terminal-rhel8:v2.3.0-51", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2.3 for RHEL 8", "release_date": "2021-08-06T00:00:00Z"}], "bugzilla": {"description": "nodejs-ansi_up: XSS due to insufficient URL sanitization", "id": "1936427", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1936427"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "status": "verified"}, "cwe": "CWE-79", "details": ["The npm package ansi_up converts ANSI escape codes into HTML. In ansi_up v4, ANSI escape codes can be used to create HTML hyperlinks. Due to insufficient URL sanitization, this feature is affected by a cross-site scripting (XSS) vulnerability. This issue is fixed in v5.0.0.", "A flaw was found in npm package ansi_up versions < 5.0.0 when parsing untrusted user input. An attacker could take advantage of this by introducing ANSI escape codes to inject arbitrary HTML and JavaScript in result mounting a cross-site scripting (XSS) attack."], "name": "CVE-2021-3377", "public_date": "2021-01-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-3377\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-3377\nhttps://doyensec.com/resources/Doyensec_Advisory_ansi_up4_XSS.pdf"], "threat_severity": "Moderate"}

{}