{"id":"CVE-2026-55164","summary":"Lemur: Plaintext password storage in Lemur user-update path","details":"Lemur manages TLS certificate creation. Prior to 1.9.2, lemur.users.service.update assigned a replacement password directly to users.password, while lemur/users/models.py registered User.hash_password only for the before_insert event. Because no before_update listener ran, administrator-initiated password changes through PUT /api/1/users/ were committed as plaintext. The affected user could no longer authenticate normally because bcrypt verification received an unhashed value. A database, backup, replica, query-log, or administrative read compromise exposed immediately usable credentials without offline cracking. The fix registers hashing for before_update and avoids rehashing values that already have a bcrypt prefix. This issue is fixed in version 1.9.2.","aliases":["GHSA-q437-g7fv-2jvv","PYSEC-2026-2587"],"modified":"2026-09-10T03:30:47.688195272Z","published":"2026-08-18T18:53:12.483Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-256"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55164.json"},"references":[{"type":"WEB","url":"https://github.com/Netflix/lemur/releases/tag/v1.9.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55164.json"},{"type":"ADVISORY","url":"https://github.com/Netflix/lemur/security/advisories/GHSA-q437-g7fv-2jvv"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55164"},{"type":"FIX","url":"https://github.com/Netflix/lemur/commit/221c6d7275ac667bb8898ab48d2b96926a89c1c4"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/netflix/lemur","events":[{"introduced":"0"},{"fixed":"221c6d7275ac667bb8898ab48d2b96926a89c1c4"},{"fixed":"4afd730de39fa9370f6c24ea8af7fcaa45430310"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"1.9.2"}]}}],"versions":["v1.9.1","v1.9.0","v1.8.2","v1.8.1","v1.8.0","v1.7.0","v1.6.0","v1.5.0","v1.4.0","v1.3.2","v1.3.1","v1.3.0","v1.2.0","v1.1.0","v1.0.0","v0.11.0","v0.10.0","v0.9.0","v0.8.1","0.8.0","0.7.0","0.6.0","0.5.0","0.4.0","0.3.0","0.2.2","0.2.1","0.2","0.1.5","0.1.4","0.1.3","0.1.2","0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55164.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N"}]}