{"id":"CVE-2021-3030","title":"Cute Editor for ASP.NET 6.4 is vulnerable to reflected cross-site scripting caused by improper validation of the Theme GET parameter in colorpicker_more.aspx","summary":"Cute Editor for ASP.NET 6.4 is vulnerable to reflected cross-site scripting caused by improper validation of the Theme GET parameter in colorpicker_more.aspx. A remote, unauthenticated attacker can craft a URL that, once opened by a vict…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"published":"2026-09-17","updated":"2026-09-18","sourceUpdated":"2026-09-18T14:17:13.213","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-3030","references":[{"url":"https://github.com/athosgonzaga/CVE-2021-3030","label":"cve@mitre.org"},{"url":"https://github.com/athosgonzaga/CVE-2021-3030","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-18T13:35:58.662293Z"},"epss":0.00313,"epssPercentile":0.24344,"exploits":{"github":1,"githubRepos":["https://github.com/athosgonzaga/CVE-2021-3030"],"checkedAt":"2026-09-21T15:27:39.421Z"},"ingestedAt":"2026-09-17T20:28:02.783Z","slug":"CVE-2021-3030","body":"## Overview\n\nCute Editor for ASP.NET 6.4 is vulnerable to reflected cross-site scripting caused by improper validation of the Theme GET parameter in colorpicker_more.aspx. A remote, unauthenticated attacker can craft a URL that, once opened by a victim in a browser session authenticated to a site running the vulnerable component, executes arbitrary JavaScript in the security context of that site.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":33.6,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":206858,"id":"CVE-2021-3030","ts":1789742639542,"field":"cvss","old":null,"new":"6.1"},{"seq":206857,"id":"CVE-2021-3030","ts":1789742639542,"field":"severity","old":"none","new":"medium"}]}