CVE-2026-55164 PUBLISHED

Lemur: Plaintext password storage in Lemur user-update path

Assigner: GitHub_M
Reserved: 16.06.2026 Published: 18.08.2026 Updated: 18.08.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
CVSS Score: 4.9

Product Status

Vendor Netflix
Product lemur
Versions
  • Version < 1.9.2 is affected

References

Problem Types

  • CWE-256: Plaintext Storage of a Password CWE