{"id":"CVE-2021-21087","aliases":["EUVD-2021-8478","GHSA-9mx8-9vhh-5qr7"],"status":"published","title":"ColdFusion Improper neutralization of web input during page generation could lead to arbitrary JavaScript execution in the browser","description":"Adobe Coldfusion versions 2016 (update 16 and earlier), 2018 (update 10 and earlier) and 2021.0.0.323925 are affected by an Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability. An attacker could abuse this vulnerability to execute arbitrary JavaScript code in context of the current user. Exploitation of this issue requires user interaction.","severity":{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.37095,"percentile":0.98527,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-04-15T13:54:29Z","modified":"2026-06-17T03:34:48Z","exploits":[{"source":"nuclei","id":"CVE-2021-21087","title":"Adobe ColdFusion - Cross-Site Scripting","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-21087.yaml"}],"products":[{"vendor":"adobe","product":"coldfusion"}],"references":[{"url":"https://helpx.adobe.com/security/products/coldfusion/apsb21-16.html","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21087"},{"url":"https://github.com/advisories/GHSA-9mx8-9vhh-5qr7"}],"sources":{"cve":[{"id":"CVE-2021-21087","title":"ColdFusion Improper neutralization of web input during page generation could lead to arbitrary JavaScript execution in the browser","description":"Adobe Coldfusion versions 2016 (update 16 and earlier), 2018 (update 10 and earlier) and 2021.0.0.323925 are affected by an Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability. An attacker could abuse this vulnerability to execute arbitrary JavaScript code in context of the current user. Exploitation of this issue requires user interaction.","status":"published","published":"2021-04-15T13:54:29.883Z","modified":"2025-04-23T19:41:40.132Z","cvss":[{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:00.137099Z"}],"euvd":[{"id":"EUVD-2021-8478","description":"Adobe Coldfusion versions 2016 (update 16 and earlier), 2018 (update 10 and earlier) and 2021.0.0.323925 are affected by an Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability. An attacker could abuse this vulnerability to execute arbitrary JavaScript code in context of the current user. Exploitation of this issue requires user interaction.","status":"published","published":"2021-04-15T13:54:29Z","modified":"2025-04-23T19:41:40Z","cvss":[{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T20:52:05.311873Z"}],"ghsa":[{"id":"GHSA-9mx8-9vhh-5qr7","title":"Adobe Coldfusion versions 2016 (update 16 and earlier) and 2018 (update 10 and earlier) are...","description":"Adobe Coldfusion versions 2016 (update 16 and earlier) and 2018 (update 10 and earlier) are affected by an Improper Neutralization of Directives in Dynamically Evaluated Code (‘Eval Injection’) vulnerability. An attacker could abuse this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction.","status":"published","published":"2022-05-24T22:28:30Z","modified":"2023-01-30T05:05:00Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:47:10.51539Z"}],"nvd":[{"id":"CVE-2021-21087","description":"Adobe Coldfusion versions 2016 (update 16 and earlier), 2018 (update 10 and earlier) and 2021.0.0.323925 are affected by an Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability. An attacker could abuse this vulnerability to execute arbitrary JavaScript code in context of the current user. Exploitation of this issue requires user interaction.","status":"published","published":"2021-04-15T14:15:16.077Z","modified":"2026-06-17T03:34:48.277Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"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":"2026-11-02T14:06:52.03307Z"}]}}