{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-02T17:36:30.154","vulnerabilities":[{"cve":{"id":"CVE-2021-21396","sourceIdentifier":"security-advisories@github.com","published":"2021-03-26T22:15:12.947","lastModified":"2024-11-21T05:48:16.390","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"wire-server is an open-source back end for Wire, a secure collaboration platform. In wire-server from version 2021-02-16 and before version 2021-03-02, the client metadata of all users was exposed in the `GET /users/list-clients` endpoint. The endpoint could be used by any logged in user who could request client details of any other user (no connection required) as far as they can find their User ID. The exposed metadata included id, class, type, location, time, and cookie. A user on a Wire backend could use this endpoint to find registration time and location for each device for a given list of users. As a workaround, remove `/list-clients` from nginx config. This has been fixed in version 2021-03-02."},{"lang":"es","value":"wire-server es un back-end de código abierto para Wire, una plataforma de colaboración segura. En wire-server desde la versión 16-02-2021 y versiones anteriores a 02-03-2021, los metadatos del cliente de todos los usuarios estaban expuestos en el endpoint \"GET/users/list-clients\". El endpoint puede ser usado por cualquier usuario con inicio de sesión y que pueda pedir los detalles del cliente de cualquier otro usuario (no se requiere conexión) en la medida en que pueda encontrar su ID de usuario. Los metadatos expuestos incluían id, clase, tipo, ubicación, hora y cookie. Un usuario en un backend Wire podría usar este endpoint para encontrar la hora y la ubicación de registro para cada dispositivo para una lista determinada de usuarios. Como solución alternativa, elimine \"/list-clients\" de la configuración de nginx. Esto ha sido corregido en la versión 02-03-2021."}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":3.6},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":3.6}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:S/C:P/I:N/A:N","baseScore":4.0,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"NONE"},"baseSeverity":"MEDIUM","exploitabilityScore":8.0,"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-200"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:wire:wire_server:*:*:*:*:*:*:*:*","versionStartIncluding":"2021-02-16","versionEndExcluding":"2021-03-02","matchCriteriaId":"A94419C1-B8CA-4FC7-9DE7-A7E672A524D4"}]}]}],"references":[{"url":"https://github.com/wireapp/wire-server/commit/7ba2bf4140282557cf215e0b2c354d4d08cd3421","source":"security-advisories@github.com","tags":["Patch","Third Party Advisory"]},{"url":"https://github.com/wireapp/wire-server/releases/tag/v2021-03-02","source":"security-advisories@github.com","tags":["Third Party Advisory"]},{"url":"https://github.com/wireapp/wire-server/security/advisories/GHSA-qx8q-rhq2-rg4j","source":"security-advisories@github.com","tags":["Patch","Third Party Advisory"]},{"url":"https://github.com/wireapp/wire-server/commit/7ba2bf4140282557cf215e0b2c354d4d08cd3421","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://github.com/wireapp/wire-server/releases/tag/v2021-03-02","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]},{"url":"https://github.com/wireapp/wire-server/security/advisories/GHSA-qx8q-rhq2-rg4j","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]}]}}]}