{"id":"CVE-2026-55164","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-55164","generatedAt":"2026-10-28T02:20:38.225Z","title":"A database, backup, replica, query-log, or administrative read compromise exposed immediately usable credentials without offline cracking.","description":"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.","published":"2026-08-18T19:16:58.000Z","lastModified":"2026-09-08T21:02:26.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":4.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-256"],"affected":[],"epss":{"score":0.00289,"percentile":0.21265,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.29%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/Netflix/lemur/commit/221c6d7275ac667bb8898ab48d2b96926a89c1c4","source":"security-advisories@github.com"},{"url":"https://github.com/Netflix/lemur/releases/tag/v1.9.2","source":"security-advisories@github.com"},{"url":"https://github.com/Netflix/lemur/security/advisories/GHSA-q437-g7fv-2jvv","source":"security-advisories@github.com"},{"url":"https://github.com/Netflix/lemur/security/advisories/GHSA-q437-g7fv-2jvv","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-55164","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}