CVE-2026-27644Public exploitNetwork attack vector

Client command execution via unescaped CSV fields

Published May 5, 2026 · Updated May 5, 2026

CSV formula injection in Traccar Server 6.11.1 and later before 6.13.0 allows remote authenticated users to plant formulas in position exports. CsvExportProvider converts address, device-attribute, and computed-attribute values to strings and joins them with commas without escaping formula prefixes. Exploitation requires shared device access and a manager or administrator to export and open the CSV in spreadsheet software, enabling client-side command execution or data exfiltration.

CVSS severity6.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSV formula injection in Traccar Server 6.11.1 and later before 6.13.0 allows remote authenticated users to plant formulas in position exports. CsvExportProvider converts address, device-attribute, and computed-attribute values to strings and joins them with commas without escaping formula prefixes. Exploitation requires shared device access and a manager or administrator to export and open the CSV in spreadsheet software, enabling client-side command execution or data exfiltration.

The record

CVE
CVE-2026-27644
Published
May 5, 2026
Updated
May 5, 2026
Vendor
Traccar
Product
Traccar Server
Classifications
CWE-1236, T1204.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 5, 2026CVE publishedPublication date reported by the CVE source.
  2. May 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 6.11.1 , < 6.13.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Traccar · Traccar Serverversion=>= 6.11.1 , < 6.13.0

Published CVSS scores

6.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1236Improper Neutralization of Formula Elements in a CSV File
T1204.002User Execution Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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