Traccar 3.15 before 6.17.0 contains an authentication bypass vulnerability in LdapProvider.login() that fails to reject empty passwords,…
CVE-2026-126777
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.
Assessment
- CVSS
- 9.1 (v4.0)
- Severity
- Critical
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 11 November 2026
- Last updated
- 11 November 2026
- Assigner
- VulnCheck
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
At the source
References
- https://github.com/traccar/traccar/commit/552c31f2097dbed9edef7cfe174c50b16febdc21
- https://github.com/traccar/traccar/releases/tag/v6.17.0
- https://github.com/traccar/traccar/blob/v6.16.0/src/main/java/org/traccar/database/LdapProvider.java#L171-L176
- https://github.com/traccar/traccar/blob/v3.15/src/org/traccar/database/LdapProvider.java#L163-L169
- https://www.vulncheck.com/advisories/traccar-3.15-before-6.17.0-authentication-bypass-via-empty-ldap-password
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