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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.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-46233.json","reference_id":"","reference_type":"","scores":[{"value":"9.1","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-46233.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2023-46233","reference_id":"","reference_type":"","scores":[{"value":"0.00894","scoring_system":"epss","scoring_elements":"0.75551","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00894","scoring_system":"epss","scoring_elements":"0.75521","published_at":"2026-04-02T12:55:00Z"},{"value":"0.01001","scoring_system":"epss","scoring_elements":"0.76993","published_at":"2026-04-13T12:55:00Z"},{"value":"0.01001","scoring_system":"epss","scoring_elements":"0.76998","published_at":"2026-04-12T12:55:00Z"},{"value":"0.01001","scoring_system":"epss","scoring_elements":"0.77019","published_at":"2026-04-11T12:55:00Z"},{"value":"0.01001","scoring_system":"epss","scoring_elements":"0.76991","published_at":"2026-04-09T12:55:00Z"},{"value":"0.01001","scoring_system":"epss","scoring_elements":"0.7698","published_at":"2026-04-08T12:55:00Z"},{"value":"0.01001","scoring_system":"epss","scoring_elements":"0.77036","published_at":"2026-04-18T12:55:00Z"},{"value":"0.01001","scoring_system":"epss","scoring_elements":"0.77034","published_at":"2026-04-16T12:55:00Z"},{"value":"0.01001","scoring_system":"epss","scoring_elements":"0.76948","published_at":"2026-04-07T12:55:00Z"},{"value":"0.01012","scoring_system":"epss","scoring_elements":"0.77157","published_at":"2026-04-21T12:55:00Z"},{"value":"0.01012","scoring_system":"epss","scoring_elements":"0.77198","published_at":"2026-04-26T12:55:00Z"},{"value":"0.01012","scoring_system":"epss","scoring_elements":"0.77213","published_at":"2026-04-29T12:55:00Z"},{"value":"0.01012","scoring_system":"epss","scoring_elements":"0.77191","published_at":"2026-04-24T12:55:00Z"},{"value":"0.01055","scoring_system":"epss","scoring_elements":"0.77684","published_at":"2026-05-05T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2023-46233"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-46233","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-46233"},{"reference_url":"https://github.com/brix/crypto-js","reference_id":"","reference_type":"","scores":[{"value":"9.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/brix/crypto-js"},{"reference_url":"https://github.com/brix/crypto-js/commit/421dd538b2d34e7c24a5b72cc64dc2b9167db40a","reference_id":"","reference_type":"","scores":[{"value":"9.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/brix/crypto-js/commit/421dd538b2d34e7c24a5b72cc64dc2b9167db40a"},{"reference_url":"https://lists.debian.org/debian-lts-announce/2023/11/msg00025.html","reference_id":"","reference_type":"","scores":[{"value":"9.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.debian.org/debian-lts-announce/2023/11/msg00025.html"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2023-46233","reference_id":"","reference_type":"","scores":[{"value":"9.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-46233"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1055525","reference_id":"1055525","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1055525"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2246369","reference_id":"2246369","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2246369"},{"reference_url":"https://github.com/advisories/GHSA-xwcq-pm8m-c4vf","reference_id":"GHSA-xwcq-pm8m-c4vf","reference_type":"","scores":[{"value":"CRITICAL","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-xwcq-pm8m-c4vf"},{"reference_url":"https://github.com/brix/crypto-js/security/advisories/GHSA-xwcq-pm8m-c4vf","reference_id":"GHSA-xwcq-pm8m-c4vf","reference_type":"","scores":[{"value":"9.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"value":"CRITICAL","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"CRITICAL","scoring_system":"generic_textual","scoring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