{"id":"CVE-2023-46233","aliases":["GHSA-xwcq-pm8m-c4vf"],"url":"https://o3.security/vulnerability/CVE-2023-46233","summary":"crypto-js PBKDF2 1,000 times weaker than specified in 1993 and 1.3M times weaker than current standard","details":"crypto-js is a JavaScript library of crypto standards. Prior to version 4.2.0, crypto-js PBKDF2 is 1,000 times weaker than originally specified in 1993, and at least 1,300,000 times weaker than current industry standard. This is because it both defaults to SHA1, a cryptographic hash algorithm considered insecure since at least 2005, and defaults to one single iteration, a 'strength' or 'difficulty' value specified at 1,000 when specified in 1993. PBKDF2 relies on iteration count as a countermeasure to preimage and collision attacks. If used to protect passwords, the impact is high. If used to generate signatures, the impact is high. Version 4.2.0 contains a patch for this issue. As a workaround, configure crypto-js to use SHA256 with at least 250,000 iterations.","published":"2023-10-25T20:49:31.582Z","modified":"2026-08-12T03:51:32.308087539Z","cvss":{"score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"crypto-js","fixedVersion":"4.2.0"}],"fix":{"url":"https://github.com/brix/crypto-js/commit/421dd538b2d34e7c24a5b72cc64dc2b9167db40a","label":"brix/crypto-js@421dd53"},"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/11/msg00025.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/46xxx/CVE-2023-46233.json"},{"type":"ADVISORY","url":"https://github.com/brix/crypto-js/security/advisories/GHSA-xwcq-pm8m-c4vf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-46233"},{"type":"FIX","url":"https://github.com/brix/crypto-js/commit/421dd538b2d34e7c24a5b72cc64dc2b9167db40a"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:32.308087539Z"}}