{"id":"CVE-2021-43849","aliases":["GHSA-7vfx-hfvm-rhr8"],"url":"https://o3.security/vulnerability/CVE-2021-43849","summary":"cordova-plugin-fingerprint-aio DoS vulnerability","details":"## Summary:\n\nSending a specially crafted intent with an invalid/empty extras `de.niklasmerz.cordova.biometric.BiometricActivity` can cause the app to crash. sending the intent repeatedly can prevent the app using this plugin from working, resulting in a denial of service (DoS) condition.\n\n## Impact\n\nA 3rd party app/remote attacker can exploit this vulnerability by sending a malicious intent to the target device, causing the app using this plugin from working to crash or become unresponsive, resulting in a denial of service (DoS) condition.\n\n## Mitigation\n\nVersion 5.0.1 of the cordova-plugin-fingerprint-aio doesn't export the activity anymore and is no longer vulnerable.\n\nIf you want to fix older versions change the attribute `android:exported` of this code snippet in plugin.xml to `false`:\n\n```xml\n<config-file target=\"AndroidManifest.xml\" parent=\"application\">\n      <activity android:name=\"de.niklasmerz.cordova.biometric.BiometricActivity\" android:theme=\"@style/TransparentTheme\" android:exported=\"false\"/>\n</config-file>\n``` \n\n## Patches\n\nPlease upgrade to version 5.0.1 as soon as possible.\n\nPlease check out the release on [GitHub](https://github.com/NiklasMerz/cordova-plugin-fingerprint-aio/releases/tag/v5.0.1).\n\n## For more information\nIf you have any questions or comments about this advisory please go to the discussion on [GitHub](https://github.com/NiklasMerz/cordova-plugin-fingerprint-aio/discussions/394).\n","published":"2021-12-23T17:15:07.373Z","modified":"2026-07-09T12:20:26.173180Z","cvss":{"score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.00333,"percentile":0.26343,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"cordova-plugin-fingerprint-aio","fixedVersion":"5.0.1"}],"fix":{"url":"https://github.com/NiklasMerz/cordova-plugin-fingerprint-aio/commit/27434a240f97f69fd930088654590c8ba43569df","label":"NiklasMerz/cordova-plugin-fingerprint-aio@27434a2"},"references":[{"type":"ADVISORY","url":"https://github.com/NiklasMerz/cordova-plugin-fingerprint-aio/releases/tag/v5.0.1"},{"type":"ADVISORY","url":"https://github.com/NiklasMerz/cordova-plugin-fingerprint-aio/security/advisories/GHSA-7vfx-hfvm-rhr8"},{"type":"FIX","url":"https://github.com/NiklasMerz/cordova-plugin-fingerprint-aio/commit/27434a240f97f69fd930088654590c8ba43569df"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43849"},{"type":"PACKAGE","url":"https://github.com/NiklasMerz/cordova-plugin-fingerprint-aio"},{"type":"WEB","url":"https://github.com/NiklasMerz/cordova-plugin-fingerprint-aio/discussions/394"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T12:20:26.173180Z"}}