{"id":"CVE-2026-87760","aliases":["EUVD-2026-96769","GHSA-pwvc-4967-h5ch"],"status":"published","title":"Web Vitals Tracking \u003c= 5.4.2 - Unauthenticated Stored XSS via Tracking Beacon Metric Name","description":"The Web Vitals Tracking WordPress plugin through 5.4.2 does not validate or escape performance measurements submitted by unauthenticated visitors before storing them and outputting them in a script context on an administrative page, allowing unauthenticated attackers to perform Stored Cross-Site Scripting attacks against administrators.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.0034,"percentile":0.27807,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-10-11T06:00:15Z","modified":"2026-10-13T20:36:00Z","products":[{"vendor":"unknown","product":"web vitals tracking"}],"references":[{"url":"https://wpscan.com/vulnerability/c6250c43-42c5-4c76-9eb9-2b35ba461e8c/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87760"},{"url":"https://wpscan.com/vulnerability/c6250c43-42c5-4c76-9eb9-2b35ba461e8c"},{"url":"https://github.com/advisories/GHSA-pwvc-4967-h5ch"}],"sources":{"cve":[{"id":"CVE-2026-87760","title":"Web Vitals Tracking \u003c= 5.4.2 - Unauthenticated Stored XSS via Tracking Beacon Metric Name","description":"The Web Vitals Tracking WordPress plugin through 5.4.2 does not validate or escape performance measurements submitted by unauthenticated visitors before storing them and outputting them in a script context on an administrative page, allowing unauthenticated attackers to perform Stored Cross-Site Scripting attacks against administrators.","status":"published","published":"2026-10-11T06:00:15.037Z","modified":"2026-10-11T11:32:43.617Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T13:37:47.463822Z"}],"euvd":[{"id":"EUVD-2026-96769","description":"The Web Vitals Tracking WordPress plugin through 5.4.2 does not validate or escape performance measurements submitted by unauthenticated visitors before storing them and outputting them in a script context on an administrative page, allowing unauthenticated attackers to perform Stored Cross-Site Scripting attacks against administrators.","status":"published","published":"2026-10-11T06:00:15Z","modified":"2026-10-11T11:32:43Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T17:27:23.217739Z"}],"ghsa":[{"id":"GHSA-pwvc-4967-h5ch","title":"The Web Vitals Tracking WordPress plugin through 5.4.2 does not validate or escape performance...","description":"The Web Vitals Tracking WordPress plugin through 5.4.2 does not validate or escape performance measurements submitted by unauthenticated visitors before storing them and outputting them in a script context on an administrative page, allowing unauthenticated attackers to perform Stored Cross-Site Scripting attacks against administrators.","status":"published","published":"2026-10-11T09:30:25Z","modified":"2026-10-11T12:32:12Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:13:04.632316Z"}],"nvd":[{"id":"CVE-2026-87760","description":"The Web Vitals Tracking WordPress plugin through 5.4.2 does not validate or escape performance measurements submitted by unauthenticated visitors before storing them and outputting them in a script context on an administrative page, allowing unauthenticated attackers to perform Stored Cross-Site Scripting attacks against administrators.","status":"published","published":"2026-10-11T07:17:26.573Z","modified":"2026-10-13T20:36:00.85Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:55.874869Z"}]}}