{"id":"CVE-2026-77115","aliases":["EUVD-2026-64638","GHSA-x2v4-r59f-8jxr"],"status":"published","title":"Brave Popup Builder \u003c 0.8.6 - Unauthenticated Reflected XSS via UTM Parameters","description":"Brave Popup Builder (brave-popup-builder) up to version 0.8.5 reflects UTM query parameters into popup form HTML without escaping them.","severity":{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-09","score":0.00251,"percentile":0.16661,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-08-23T06:00:18Z","modified":"2026-10-12T16:10:00Z","products":[{"vendor":"brave","product":"brave"},{"vendor":"unknown","product":"brave"}],"references":[{"url":"https://wpscan.com/vulnerability/d4a760c0-8e71-4261-a08b-9b6a296c631a/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77115"},{"url":"https://wpscan.com/vulnerability/d4a760c0-8e71-4261-a08b-9b6a296c631a"},{"url":"https://github.com/advisories/GHSA-x2v4-r59f-8jxr"}],"sources":{"cve":[{"id":"CVE-2026-77115","title":"Brave Popup Builder \u003c 0.8.6 - Unauthenticated Reflected XSS via UTM Parameters","description":"Brave Popup Builder (brave-popup-builder) up to version 0.8.5 reflects UTM query parameters into popup form HTML without escaping them.","status":"published","published":"2026-08-23T06:00:18.239Z","modified":"2026-08-23T15:32:14.374Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L","level":"high","assessor":"adp"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:20:15.712761Z"}],"euvd":[{"id":"EUVD-2026-64638","description":"Brave Popup Builder (brave-popup-builder) up to version 0.8.5 reflects UTM query parameters into popup form HTML without escaping them.","status":"published","published":"2026-08-23T06:00:18Z","modified":"2026-08-23T15:32:14Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T18:01:35.768217Z"}],"ghsa":[{"id":"GHSA-x2v4-r59f-8jxr","title":"Brave Popup Builder (brave-popup-builder) up to version 0.8.5 reflects UTM query parameters into...","description":"Brave Popup Builder (brave-popup-builder) up to version 0.8.5 reflects UTM query parameters into popup form HTML without escaping them.","status":"published","published":"2026-08-23T06:30:22Z","modified":"2026-08-23T18:31:44Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:10:52.810585Z"}],"nvd":[{"id":"CVE-2026-77115","description":"Brave Popup Builder (brave-popup-builder) up to version 0.8.5 reflects UTM query parameters into popup form HTML without escaping them.","status":"published","published":"2026-08-23T06:17:27.73Z","modified":"2026-10-12T16:10:00.22Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L","level":"high","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:41.018848Z"}]}}