{"id":"CVE-2021-39307","aliases":["EUVD-2021-25668","GHSA-h97p-5fjq-c93c"],"status":"published","title":"PDFTron’s WebViewer UI 8.0 or below renders dangerous URLs as hyperlinks in supported documents,...","description":"PDFTron's WebViewer UI 8.0 or below renders dangerous URLs as hyperlinks in supported documents, including JavaScript URLs, allowing the execution of arbitrary JavaScript code.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01116,"percentile":0.66485,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-09-15T12:47:05Z","modified":"2026-06-17T04:03:30Z","products":[{"vendor":"pdftron","product":"webviewer_ui"}],"references":[{"url":"https://www.pdftron.com/webviewer/","tags":["x_refsource_MISC","x_transferred","Product","Vendor Advisory"]},{"url":"https://research.nccgroup.com/2021/09/14/technical-advisory-pdftron-javascript-urls-allowed-in-webviewer-ui-cve-2021-39307/","tags":["x_refsource_MISC","x_transferred","Exploit","Patch","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39307"},{"url":"https://github.com/advisories/GHSA-h97p-5fjq-c93c"}],"sources":{"cve":[{"id":"CVE-2021-39307","description":"PDFTron's WebViewer UI 8.0 or below renders dangerous URLs as hyperlinks in supported documents, including JavaScript URLs, allowing the execution of arbitrary JavaScript code.","status":"published","published":"2021-09-15T12:47:05Z","modified":"2024-08-04T02:06:41.81Z","updated_at":"2026-11-02T14:33:09.864034Z"}],"euvd":[{"id":"EUVD-2021-25668","description":"PDFTron's WebViewer UI 8.0 or below renders dangerous URLs as hyperlinks in supported documents, including JavaScript URLs, allowing the execution of arbitrary JavaScript code.","status":"published","published":"2021-09-15T12:47:05Z","modified":"2024-08-04T02:06:41Z","updated_at":"2026-11-03T03:24:23.719378Z"}],"ghsa":[{"id":"GHSA-h97p-5fjq-c93c","title":"PDFTron’s WebViewer UI 8.0 or below renders dangerous URLs as hyperlinks in supported documents,...","description":"PDFTron’s WebViewer UI 8.0 or below renders dangerous URLs as hyperlinks in supported documents, including JavaScript URLs, allowing the execution of arbitrary JavaScript code.","status":"published","published":"2022-05-24T22:28:42Z","modified":"2023-01-30T05:05:45Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:47:21.132905Z"}],"nvd":[{"id":"CVE-2021-39307","description":"PDFTron's WebViewer UI 8.0 or below renders dangerous URLs as hyperlinks in supported documents, including JavaScript URLs, allowing the execution of arbitrary JavaScript code.","status":"published","published":"2021-09-15T13:15:08.12Z","modified":"2026-06-17T04:03:30.947Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:58.502206Z"}]}}