Traccar
CVE-2026-23521
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V5 - File Handling Path canonicalization, traversal prevention
MITRE ATT&CK
2 techniques across 2 tactics: Discovery, Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS 6.5 (MEDIUM). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None. Exploitation requires authentication. Public exploit/POC available. |
| Exploit ScenarioDerived | An attacker (requires authentication) could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Traccar GPS tracking system through version 6.11.1 allows authenticated users to conduct arbitrary file writes by setting device identifiers to absolute paths, which bypass path validation during image uploads. Public exploit code exists for this vulnerability, and no patch is currently available. An attacker with device management privileges could write files outside the intended media directory, potentially compromising system integrity.
Earlier versions of this analysis (1)
Versions of the Traccar open-source GPS tracking system up to and including 6.11.1 contain an issue in which authenticated users who can create or edit devices can set a device uniqueId to an absolute path. [CVSS 6.5 MEDIUM]
RemediationAI
Monitor vendor advisories for a patch. Validate and sanitize file path inputs. Use allowlists. Restrict network access to the affected service where possible.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Classified as CWE-22 (Path Traversal). Affects Traccar. Versions of the Traccar open-source GPS tracking system up to and including 6.11.1 contain an issue in which authenticated users who can create or edit devices can set a device uniqueId to an absolute path. When uploading a device image, Traccar uses that uniqueId to build the filesystem path without enforcing that the resolved path stays under the media root. This allows writing files outside the media directory. As of time of publication, it is unclear whether a fix is available.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
Lifecycle Timeline
2DescriptionGitHub Advisory
Versions of the Traccar open-source GPS tracking system up to and including 6.11.1 contain an issue in which authenticated users who can create or edit devices can set a device uniqueId to an absolute path. When uploading a device image, Traccar uses that uniqueId to build the filesystem path without enforcing that the resolved path stays under the media root. This allows writing files outside the media directory. As of time of publication, it is unclear whether a fix is available.
Executive ViewAI
CVE-2026-23521 presents notable security risk, a path traversal vulnerability rated CVSS 6.5. This could allow unauthorized file access. Proof-of-concept code is publicly available. Organizations should apply vendor updates when available and monitor for exploitation.
Apply vendor patch. If patching is delayed: restrict file access via WAF, implement allowlists.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Path traversal exploits occur when applications use user-controlled input to construct file system paths without proper validation.
Affected Products (CPE)GitHub Advisory
Traccar is an open source GPS tracking system. Rated critical severity (CVSS 9.6), this vulnerability is remotely exploi
Traccar Traccar Server version 4.0 and earlier contains a CWE-94: Improper Control of Generation of Code ('Code Injectio
Traccar versions 6.11.1 and later allow authenticated users to inject malicious JavaScript into other users' browsers by
Traccar GPS tracking system through version 6.11.1 allows authenticated users to hijack OAuth 2.0 authorization codes th
Versions of the Traccar open-source GPS tracking system up to and including 6.11.1 contain a Cross-Site WebSocket Hijack
In Traccar Server version 4.2, protocol/SpotProtocolDecoder.java might allow XXE attacks. Rated critical severity (CVSS
Use of Default Credentials vulnerability in Tananaev Solutions Traccar Server on Administrator Panel modules allows Auth
Silent configuration hijack in Traccar Client GPS tracking app (versions 9.7.19 and below) allows remote attackers to re
Password reset tokens in Traccar through 6.16.0 are not bound to their intended purpose, allowing an attacker who posses
Authenticated Traccar accounts that hold both group-management and report-request permissions can drive the server into
Traccar versions 6.11.1 through 6.13.0 fail to escape user-controlled device and computed attributes in CSV export funct
Traccar GPS Tracking System before version 4.9 has a LDAP injection vulnerability. Rated medium severity (CVSS 6.5), thi
Exploit-DB