# CVE-2026-104203: Traccar: Authentication bypass via path parameters exposes protected device media

Status: published. Published: 2026-11-04. Updated: 2026-11-04.

Traccar is an open source GPS tracking system. From 5.1 until 6.15.0, WebModule.java's MediaFilter Guice mapping and WebServer.java's Jetty ResourceServlet assign different routing meanings to path parameters at /api/media/*. An unauthenticated attacker who knows or guesses a device unique ID and media filename can insert a semicolon at the Servlet boundary, bypass MediaFilter's session and device authorization checks, and retrieve the protected media because Jetty still dispatches the noncanonical path to ResourceServlet. The demonstrated impact is read-only disclosure of a protected device media file; depending on the deployment and stored media, this could expose photographs, audio, video, or other uploaded files. The advisory does not establish directory listing, traversal, modification, account takeover, denial of service, or code execution. Reverse proxies that reject or rewrite semicolon path parameters may block the request. This issue is fixed in version 6.15.0.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- traccar / traccar: >= 5.1, < 6.15.0 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-200, CWE-288

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/traccar/traccar/security/advisories/GHSA-w59q-j9pg-pw7x (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/traccar/traccar/commit/f6f22ea32a7c6d51f2cdc923cca6d3b2621a205a (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/traccar/traccar/releases/tag/v6.15.0 (CNA: GitHub_M; x_refsource_MISC)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-104203; retrieved 2026-11-04; source updated 2026-11-04

Revision: bc63fac2db19d4c31727a20d1a2242c565442e3223bbce044d4a8fd887c8a69b

Canonical: https://y2.dev/cve/CVE-2026-104203

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