CVE-2026-126777
Traccar 3.15 before 6.17.0 Authentication Bypass via Empty LDAP Password
CVSS Score
7.4
EPSS Score
0.0%
EPSS Percentile
0th
Traccar 3.15 before 6.17.0 contains an authentication bypass vulnerability in LdapProvider.login() that fails to reject empty passwords, causing LDAP binds to be performed as unauthenticated binds when LDAP authentication is enabled. Unauthenticated attackers who know a valid username can log in via POST /api/session or HTTP Basic authentication with an empty password against directories that permit unauthenticated binds, obtaining sessions for any account including administrators.
| CWE | CWE-287 |
| Vendor | traccar |
| Product | traccar |
| Published | Nov 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
Traccar / Traccar
3.15 < 6.17.0
References
github.com: https://github.com/traccar/traccar/commit/552c31f2097dbed9edef7cfe174c50b16febdc21 github.com: https://github.com/traccar/traccar/releases/tag/v6.17.0 github.com: https://github.com/traccar/traccar/blob/v6.16.0/src/main/java/org/traccar/database/LdapProvider.java#L171-L176 github.com: https://github.com/traccar/traccar/blob/v3.15/src/org/traccar/database/LdapProvider.java#L163-L169 vulncheck.com: https://www.vulncheck.com/advisories/traccar-3.15-before-6.17.0-authentication-bypass-via-empty-ldap-password
Credits
Zachariah Mithani (AploSec)