{"id":"GHSA-qrpm-p2h7-hrv2","summary":"Exposure of Sensitive Information to an Unauthorized Actor in nanoid","details":"The package nanoid from 3.0.0, before 3.1.31, are vulnerable to Information Exposure via the valueOf() function which allows to reproduce the last id generated.","aliases":["CVE-2021-23566"],"modified":"2025-11-04T16:35:00Z","published":"2022-01-21T23:57:06Z","database_specific":{"github_reviewed_at":"2022-01-18T21:54:04Z","nvd_published_at":"2022-01-14T20:15:00Z","cwe_ids":["CWE-200","CWE-704"],"severity":"MODERATE","github_reviewed":true},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23566"},{"type":"WEB","url":"https://github.com/ai/nanoid/pull/328"},{"type":"WEB","url":"https://github.com/ai/nanoid/commit/2b7bd9332bc49b6330c7ddb08e5c661833db2575"},{"type":"WEB","url":"https://gist.github.com/artalar/bc6d1eb9a3477d15d2772e876169a444"},{"type":"PACKAGE","url":"https://github.com/ai/nanoid"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/12/msg00025.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00006.html"},{"type":"WEB","url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2332550"},{"type":"WEB","url":"https://snyk.io/vuln/SNYK-JS-NANOID-2332193"}],"affected":[{"package":{"name":"nanoid","ecosystem":"npm","purl":"pkg:npm/nanoid"},"ranges":[{"type":"SEMVER","events":[{"introduced":"3.0.0"},{"fixed":"3.1.31"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/01/GHSA-qrpm-p2h7-hrv2/GHSA-qrpm-p2h7-hrv2.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}