{"id":"CVE-2023-46233","state":"PUBLISHED","title":"crypto-js PBKDF2 1,000 times weaker than specified in 1993 and 1.3M times weaker than current standard","description":"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.","publishedAt":"2023-10-25T20:49:31.582Z","updatedAt":"2026-06-23T17:19:09.485Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["brix crypto-js"],"affected":[{"vendor":"brix","product":"crypto-js","versions":[{"version":"< 4.2.0","status":"affected"}]}],"references":["https://github.com/brix/crypto-js/security/advisories/GHSA-xwcq-pm8m-c4vf","https://github.com/brix/crypto-js/commit/421dd538b2d34e7c24a5b72cc64dc2b9167db40a","https://lists.debian.org/debian-lts-announce/2023/11/msg00025.html"],"weaknesses":["CWE-328","CWE-916"],"ingestedAt":"2026-10-29T20:06:24.729Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/46xxx/CVE-2023-46233.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-46233","state":"PUBLISHED","datePublished":"2023-10-25T20:49:31.582Z","dateUpdated":"2026-06-23T17:19:09.485Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2023-10-19T20:34:00.946Z"},"containers":{"cna":{"title":"crypto-js PBKDF2 1,000 times weaker than specified in 1993 and 1.3M times weaker than current standard","descriptions":[{"lang":"en","value":"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. 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