{"id":"CVE-2026-55164","title":"Lemur manages TLS certificate creation","summary":"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. Be…","severity":"medium","cvss":4.9,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-256"],"vendor":"lemur","product":"lemur","affected":["lemur <= 1.9.1"],"patched":["lemur 1.9.2"],"published":"2026-08-18","updated":"2026-09-08","sourceUpdated":"2026-09-08T21:02:26.047","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55164","references":[{"url":"https://github.com/Netflix/lemur/commit/221c6d7275ac667bb8898ab48d2b96926a89c1c4","label":"security-advisories@github.com"},{"url":"https://github.com/Netflix/lemur/releases/tag/v1.9.2","label":"security-advisories@github.com"},{"url":"https://github.com/Netflix/lemur/security/advisories/GHSA-q437-g7fv-2jvv","label":"security-advisories@github.com"},{"url":"https://github.com/Netflix/lemur/security/advisories/GHSA-q437-g7fv-2jvv","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/advisories/GHSA-q437-g7fv-2jvv"}],"tags":["nvd","ghsa","pip"],"epss":0.00292,"epssPercentile":0.22071,"ecosystem":"pip","ingestedAt":"2026-06-26T16:43:14.205Z","slug":"CVE-2026-55164","body":"## Overview\n\nLemur 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-55164)\n\nAffected packages:\n\n- `lemur <= 1.9.1`\n\nPatched in:\n\n- `lemur 1.9.2`\n\nSource: https://github.com/advisories/GHSA-q437-g7fv-2jvv","depth":"sunlit","depthScore":27,"depthScoreParts":{"impact":27,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}