{"id":"RHLW-2026-b11abda52745af4c","summary":"Lightwell Security Advisory: tokenizers 0.23.1+rhlw.1","details":"Red Hat Lightwell has released tokenizers 0.23.1+rhlw.1 with a backported security fix.\n\nCVE-2026-85670: tokenizers BpeBuilder Buffer Overflow via merge token\n\nThis patched artifact is a drop-in replacement for tokenizers 0.23.1 from PyPI.","modified":"2026-10-27T08:45:03.134558402Z","published":"2026-10-19T14:27:21Z","upstream":["CVE-2026-85670"],"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85670.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85670"},{"type":"REPORT","url":"https://github.com/huggingface/tokenizers/issues/2094"},{"type":"PACKAGE","url":"https://github.com/huggingface/tokenizers"},{"type":"ARTICLE","url":"https://github.com/huggingface/tokenizers/blob/v0.23.2/tokenizers/src/models/bpe/model.rs"}],"affected":[{"package":{"name":"tokenizers","ecosystem":"Red Hat Lightwell:PyPI","purl":"pkg:pypi/tokenizers"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.23.1+rhlw.1"}]}],"versions":["0.0.1","0.0.10","0.0.11","0.0.12","0.0.13","0.0.2","0.0.3","0.0.4","0.0.5","0.0.6","0.0.7","0.0.8","0.0.9","0.1.0","0.1.1","0.10.0","0.10.1","0.10.2","0.10.3","0.11.0","0.11.1","0.11.2","0.11.3","0.11.4","0.11.5","0.11.6","0.12.0","0.12.1","0.13.0","0.13.1","0.13.2","0.13.3","0.14.0","0.14.1","0.15.0","0.15.1","0.15.2","0.19.0","0.19.1","0.2.0","0.2.1","0.20.0","0.20.1","0.20.2","0.20.3","0.20.4","0.20.4rc0","0.21.0","0.21.0rc0","0.21.1","0.21.1rc0","0.21.2","0.21.2rc0","0.21.4","0.22.0","0.22.0rc0","0.22.1","0.22.1rc0","0.22.2","0.22.2rc0","0.23.0rc0","0.23.1","0.23.1rc0","0.3.0","0.4.0","0.4.1","0.4.2","0.5.0","0.5.1","0.5.2","0.6.0","0.7.0","0.8.0","0.8.0.dev0","0.8.0.dev1","0.8.0.dev2","0.8.0rc1","0.8.0rc2","0.8.0rc3","0.8.0rc4","0.8.1","0.8.1rc1","0.8.1rc2","0.9.0","0.9.0.dev0","0.9.0.dev1","0.9.0.dev2","0.9.0.dev3","0.9.0.dev4","0.9.0rc1","0.9.0rc2","0.9.1","0.9.2","0.9.3","0.9.4"],"database_specific":{"lightwell":{"backport_base_version":"0.23.1","remediated_version":"0.23.1+rhlw.1","repository_url":"https://packages.redhat.com/lightwell/python/remediated/"},"source":"https://github.com/project-lightwell/lightwell-osv/blob/main/advisories/RHLW-2026-b11abda52745af4c.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}],"credits":[{"name":"Red Hat Lightwell","type":"REMEDIATION_DEVELOPER"}]}