{"id":"CVE-2021-35240","aliases":["EUVD-2021-21883","GHSA-ch69-82p3-hfw4"],"status":"published","title":"Stored XSS via Help Server settings","description":"A security researcher stored XSS via a Help Server setting. This affects customers using Internet Explorer, because they do not support 'rel=noopener'.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:C/C:H/I:L/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01074,"percentile":0.65223,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-08-31T15:57:21Z","modified":"2026-06-17T03:57:21Z","products":[{"vendor":"solarwinds","product":"orion platform"},{"vendor":"solarwinds","product":"orion_platform"}],"references":[{"url":"https://documentation.solarwinds.com/en/success_center/orionplatform/content/core-secure-configuration.htm","tags":["x_refsource_MISC","x_transferred","Product","Vendor Advisory"]},{"url":"https://support.solarwinds.com/SuccessCenter/s/article/Orion-Platform-2020-2-6-Hotfix-1?language=en_US","tags":["x_refsource_MISC","x_transferred","Mitigation","Vendor Advisory"]},{"url":"https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35240","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.solarwinds.com/SuccessCenter/s/article/Mitigate-the-Stored-XSS-via-Help-Server-setting-CVE-2021-35240?language=en_US","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-35240"},{"url":"https://github.com/advisories/GHSA-ch69-82p3-hfw4"}],"sources":{"cve":[{"id":"CVE-2021-35240","title":"Stored XSS via Help Server settings","description":"A security researcher stored XSS via a Help Server setting. This affects customers using Internet Explorer, because they do not support 'rel=noopener'.","status":"published","published":"2021-08-31T15:57:21Z","modified":"2024-08-04T00:33:51.24Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:C/C:H/I:L/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:09.864034Z"}],"euvd":[{"id":"EUVD-2021-21883","description":"A security researcher stored XSS via a Help Server setting. This affects customers using Internet Explorer, because they do not support 'rel=noopener'.","status":"published","published":"2021-08-31T15:57:21Z","modified":"2024-08-04T00:33:51Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:C/C:H/I:L/A:L","level":"medium"}],"updated_at":"2026-11-03T03:24:30.441845Z"}],"ghsa":[{"id":"GHSA-ch69-82p3-hfw4","title":"A security researcher stored XSS via a Help Server setting. This affects customers using Internet...","description":"A security researcher stored XSS via a Help Server setting. This affects customers using Internet Explorer, because they do not support 'rel=noopener'.","status":"published","published":"2022-05-24T19:12:35Z","modified":"2023-01-30T05:01:52Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:30.304291Z"}],"nvd":[{"id":"CVE-2021-35240","description":"A security researcher stored XSS via a Help Server setting. This affects customers using Internet Explorer, because they do not support 'rel=noopener'.","status":"published","published":"2021-08-31T16:15:07.863Z","modified":"2026-06-17T03:57:21.983Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:C/C:H/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:57.67549Z"}]}}