{"id":"PYSEC-2026-1254","summary":"Cleanlab Deserialization of Untrusted Data vulnerability","details":"Deserialization of untrusted data can occur in versions 2.4.0 or newer of the Cleanlab project, enabling a maliciously crafted datalab.pkl file to run arbitrary code on an end user’s system when the data directory is loaded.","aliases":["CVE-2024-45857","GHSA-8cm9-rrgc-4pcj"],"modified":"2026-07-07T17:47:25.988155198Z","published":"2026-07-07T14:34:40.749118Z","references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-45857"},{"type":"PACKAGE","url":"https://github.com/cleanlab/cleanlab"},{"type":"WEB","url":"https://github.com/cleanlab/cleanlab/blob/v2.6.6/cleanlab/datalab/internal/serialize.py#L102-L138"},{"type":"WEB","url":"https://hiddenlayer.com/sai-security-advisory/2024-09-cleanlab"},{"type":"PACKAGE","url":"https://pypi.org/project/cleanlab"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-8cm9-rrgc-4pcj"}],"affected":[{"package":{"name":"cleanlab","ecosystem":"PyPI","purl":"pkg:pypi/cleanlab"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.4.0"},{"last_affected":"2.6.6"}]}],"versions":["2.4.0","2.5.0","2.6.0","2.6.1","2.6.2","2.6.3","2.6.4","2.6.5","2.6.6"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/cleanlab/PYSEC-2026-1254.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}