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Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')

CVE-2026-44304

Low
0/10

Summary

Lemur's LDAP authentication module (lemur/auth/ldap.py) constructs LDAP search filters using unsanitized user input via Python string interpolation. An authenticated LDAP user can inject LDAP filter metacharacters through the username field to manipulate group membership queries and escalate their privileges to administrator. This affects versions prior to 1.9.0.

  • LOW
  • NETWORK
  • HIGH
  • UNCHANGED
  • NONE
  • LOW
  • HIGH
  • NONE

CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')

The software constructs all or part of an LDAP query using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended LDAP query when it is sent to a downstream component.

References

Advisory Timeline

  • Published