{"id":"CVE-2019-12250","aliases":["EUVD-2019-3892","GHSA-jg67-mr48-c26q"],"status":"disputed","title":"IdentityServer IdentityServer4 through 2.4 has stored XSS via the httpContext to the host...","description":"IdentityServer IdentityServer4 through 2.4 has stored XSS via the httpContext to the host/Extensions/RequestLoggerMiddleware.cs LogForErrorContext method, which can be triggered by viewing a log. NOTE: the software maintainer disputes that this is a vulnerability because the request logger is not part of IdentityServer but only our development test host","severity":{"version":"3.0","score":6.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00848,"percentile":0.58356,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2019-05-21T15:22:43Z","modified":"2026-10-20T10:51:36Z","products":[{"vendor":"identityserver","product":"identityserver4"}],"references":[{"url":"https://github.com/IdentityServer/IdentityServer4/issues/3279","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-12250"},{"url":"https://github.com/advisories/GHSA-jg67-mr48-c26q"}],"sources":{"cve":[{"id":"CVE-2019-12250","description":"IdentityServer IdentityServer4 through 2.4 has stored XSS via the httpContext to the host/Extensions/RequestLoggerMiddleware.cs LogForErrorContext method, which can be triggered by viewing a log. NOTE: the software maintainer disputes that this is a vulnerability because the request logger is not part of IdentityServer but only our development test host","status":"disputed","published":"2019-05-21T15:22:43Z","modified":"2024-08-04T23:17:39.197Z","updated_at":"2026-11-02T14:20:24.025419Z"}],"euvd":[{"id":"EUVD-2019-3892","description":"IdentityServer IdentityServer4 through 2.4 has stored XSS via the httpContext to the host/Extensions/RequestLoggerMiddleware.cs LogForErrorContext method, which can be triggered by viewing a log. NOTE: the software maintainer disputes that this is a vulnerability because the request logger is not part of IdentityServer but only our development test host","status":"published","published":"2019-05-21T15:22:43Z","modified":"2024-08-04T23:17:39Z","updated_at":"2026-11-03T02:40:46.416719Z"}],"ghsa":[{"id":"GHSA-jg67-mr48-c26q","title":"IdentityServer IdentityServer4 through 2.4 has stored XSS via the httpContext to the host...","description":"IdentityServer IdentityServer4 through 2.4 has stored XSS via the httpContext to the host/Extensions/RequestLoggerMiddleware.cs LogForErrorContext method, which can be triggered by viewing a log.","status":"published","published":"2022-05-24T16:46:09Z","modified":"2024-03-21T03:33:38Z","cvss":[{"version":"3.0","score":6.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:55:41.504227Z"}],"nvd":[{"id":"CVE-2019-12250","description":"IdentityServer IdentityServer4 through 2.4 has stored XSS via the httpContext to the host/Extensions/RequestLoggerMiddleware.cs LogForErrorContext method, which can be triggered by viewing a log. NOTE: the software maintainer disputes that this is a vulnerability because the request logger is not part of IdentityServer but only our development test host","status":"disputed","published":"2019-05-21T16:29:01.877Z","modified":"2026-06-17T02:14:18.05Z","cvss":[{"version":"3.0","score":6.1,"vector":"CVSS:3.0/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":"2026-11-02T14:05:13.880207Z"}],"osv":[{"id":"CVE-2019-12250","description":"IdentityServer IdentityServer4 through 2.4 has stored XSS via the httpContext to the host/Extensions/RequestLoggerMiddleware.cs LogForErrorContext method, which can be triggered by viewing a log. NOTE: the software maintainer disputes that this is a vulnerability because the request logger is not part of IdentityServer but only our development test host","status":"published","published":"2019-05-21T16:29:01.877Z","modified":"2026-10-20T10:51:36.158048393Z","cvss":[{"version":"3.0","score":6.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:10.718934Z"}]}}