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CVE-2026-126777VulnerabilityPublished

Traccar 3.15 before 6.17.0 contains an authentication bypass vulnerability in LdapProvider.login() that fails to

Source GCVE Database

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Authoritative record:CVE-2026-126777· Critical 9.1

Not known to be exploited · CVSS 9.1 Critical : upgrade to 6.17.0 as a priority.

Data as of 11 Nov 2026, 22:33 UTC

CVSS 4.0 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.09.1
CNA (VulnCheck)CVSS 3.17.4
Patch
Available – fixed in 6.17.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Upgrade Traccar to 6.17.0.

Affected software

ProductAffectedFixed in
TraccarTraccarAffected
  • >=3.15 <6.17.0
Fixed in
  • 6.17.0
GitHubTraccarpkg:github/TraccarOther threatsAffected
  • >=3.15 <6.17.0
Fixed in
  • 6.17.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available in Traccar version 6.17.0 and later. Users should upgrade to version 6.17.0 or newer to remediate this vulnerability. Until upgraded, ensure that LDAP directories do not permit unauthenticated binds to reduce exposure.

Description

Traccar versions from 3.15 up to but not including 6.17.0 contain an authentication bypass vulnerability in the LdapProvider.login() function. This flaw allows unauthenticated attackers who know a valid username to log in with an empty password if the LDAP directory permits unauthenticated binds. This can lead to unauthorized access to any account, including administrator accounts.

References

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