{"id":"CVE-2021-38157","aliases":["EUVD-2021-24627","GHSA-q29w-c798-qpqq"],"status":"published","title":"** UNSUPPORTED WHEN ASSIGNED ** LeoStream Connection Broker 9.x before 9.0.34.3 allows...","description":"LeoStream Connection Broker 9.x before 9.0.34.3 allows Unauthenticated Reflected XSS via the /index.pl user parameter. NOTE: This vulnerability only affects products that are no longer supported by the maintainer","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01119,"percentile":0.66566,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-08-06T20:58:13Z","modified":"2026-06-17T04:01:35Z","products":[{"vendor":"leostream","product":"connection_broker"}],"references":[{"url":"https://dgccpa.com","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://leostream.com","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.leostream.com/resources-2/product-lifecycle/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://gist.github.com/erud1te-sec/5c85924cb78ba85af42e0b7b62a5ec91","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-38157"},{"url":"https://www.leostream.com/resources-2/product-lifecycle"},{"url":"https://github.com/advisories/GHSA-q29w-c798-qpqq"}],"sources":{"cve":[{"id":"CVE-2021-38157","description":"LeoStream Connection Broker 9.x before 9.0.34.3 allows Unauthenticated Reflected XSS via the /index.pl user parameter. NOTE: This vulnerability only affects products that are no longer supported by the maintainer","status":"published","published":"2021-08-06T20:58:13Z","modified":"2024-08-04T01:37:16.323Z","updated_at":"2026-11-02T14:33:07.697752Z"}],"euvd":[{"id":"EUVD-2021-24627","description":"LeoStream Connection Broker 9.x before 9.0.34.3 allows Unauthenticated Reflected XSS via the /index.pl user parameter. NOTE: This vulnerability only affects products that are no longer supported by the maintainer","status":"published","published":"2021-08-06T20:58:13Z","modified":"2024-08-04T01:37:16Z","updated_at":"2026-11-03T03:24:25.244479Z"}],"ghsa":[{"id":"GHSA-q29w-c798-qpqq","title":"** UNSUPPORTED WHEN ASSIGNED ** LeoStream Connection Broker 9.x before 9.0.34.3 allows...","description":"** UNSUPPORTED WHEN ASSIGNED ** LeoStream Connection Broker 9.x before 9.0.34.3 allows Unauthenticated Reflected XSS via the /index.pl user parameter. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.","status":"published","published":"2022-05-24T19:10:15Z","modified":"2024-03-30T05:01:52Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:55:45.740984Z"}],"nvd":[{"id":"CVE-2021-38157","description":"LeoStream Connection Broker 9.x before 9.0.34.3 allows Unauthenticated Reflected XSS via the /index.pl user parameter. NOTE: This vulnerability only affects products that are no longer supported by the maintainer","status":"published","published":"2021-08-06T21:15:06.73Z","modified":"2026-06-17T04:01:35.853Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:56.562207Z"}]}}