{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-06T14:05:47.650","vulnerabilities":[{"cve":{"id":"CVE-2021-39156","sourceIdentifier":"security-advisories@github.com","published":"2021-08-24T23:15:10.413","lastModified":"2024-11-21T06:18:44.510","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Istio is an open source platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data. Istio 1.11.0, 1.10.3 and below, and 1.9.7 and below contain a remotely exploitable vulnerability where an HTTP request with `#fragment` in the path may bypass Istio’s URI path based authorization policies. Patches are available in Istio 1.11.1, Istio 1.10.4 and Istio 1.9.8. As a work around a Lua filter may be written to normalize the path."},{"lang":"es","value":"Istio es una plataforma de código abierto que proporciona una forma uniforme de integrar microservicios, administrar el flujo de tráfico entre microservicios, aplicar políticas y agregar datos de telemetría. Istio versiones 1.11.0, 1.10.3 y por debajo, y versiones 1.9.7 y por debajo, contienen una vulnerabilidad explotable de forma remota en la que una petición HTTP con el parámetro \"#fragment\" en la ruta puede omitir las políticas de autorización basadas en la ruta URI de Istio. Los parches están disponibles en Istio versión 1.11.1, Istio versión 1.10.4 e Istio versión 1.9.8. Como solución, puede escribirse un filtro Lua para normalizar la ruta."}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":5.2},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":3.6}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:N/A:N","baseScore":5.0,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"NONE"},"baseSeverity":"MEDIUM","exploitabilityScore":10.0,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-863"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-706"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*","versionEndExcluding":"1.9.8","matchCriteriaId":"2FBF48C6-1E39-4692-A652-27E7DCDC81BC"},{"vulnerable":true,"criteria":"cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*","versionStartIncluding":"1.10.0","versionEndExcluding":"1.10.3","matchCriteriaId":"69176EED-4FB2-4CDF-A510-90C6F46C3E86"},{"vulnerable":true,"criteria":"cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*","versionStartIncluding":"1.11.0","versionEndExcluding":"1.11.1","matchCriteriaId":"886DF572-26C9-4BC9-875F-F043D445C346"}]}]}],"references":[{"url":"https://github.com/istio/istio/security/advisories/GHSA-hqxw-mm44-gc4r","source":"security-advisories@github.com","tags":["Third Party Advisory"]},{"url":"https://istio.io/latest/news/security/istio-security-2021-008","source":"security-advisories@github.com","tags":["Vendor Advisory"]},{"url":"https://github.com/istio/istio/security/advisories/GHSA-hqxw-mm44-gc4r","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]},{"url":"https://istio.io/latest/news/security/istio-security-2021-008","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}