CVE-2026-44304

Lemur manages TLS certificate creation. Prior to 1.9.0, 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 vulnerability is fixed in 1.9.0.

Scoring

Severity
HIGH
CVSS base score
8.1
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS probability
0.18%
CWE
CWE-90
Published
2026-05-12
Last modified
2026-05-14

Affected products

Weakness type

Related vulnerabilities

Markdown version · Browse all CVEs