How severe is CVE-2026-23521?

CVE-2026-23521 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-23521 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-23521?

CVE-2026-23521 affects Traccar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-23521?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-23521 have an EU (EUVD) identifier?

Yes. CVE-2026-23521 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7489.

When was CVE-2026-23521 published?

CVE-2026-23521 was published on 2026-02-23 and last updated on 2026-06-17.

CVE-2026-23521

CVE-2026-23521 is a medium-severity vulnerability in Traccar with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-7489
Weakness: CWE-22
Affected product: Traccar
Published: 2026-02-23
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-23521?: 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.
How severe is CVE-2026-23521?: CVE-2026-23521 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-23521 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-23521?: CVE-2026-23521 affects Traccar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-23521?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-23521 have an EU (EUVD) identifier?: Yes. CVE-2026-23521 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7489.
When was CVE-2026-23521 published?: CVE-2026-23521 was published on 2026-02-23 and last updated on 2026-06-17.

References

https://github.com/traccar/traccar/security/advisories/GHSA-rc28-cvfc-chqr

Affected products (1)

cpe:2.3:a:traccar:traccar:*:*:*:*:*:*:*:*

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