CVE-2026-27694: Traccar is an open source GPS tracking system

Routine

MEDIUM 5.4UPGRADE

CVE-2026-27694 is a medium-severity flaw (CVSS 5.4) affecting traccar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Traccar is an open source GPS tracking system. In org.traccar:traccar versions starting at 6.11.1 before 6.13.0, the email notification templates insert user-controlled device, geofence, and driver names into HTML email output without proper escaping. An attacker with low privileges can store crafted HTML in these fields, which is then rendered in notification emails sent to other users with access to the affected devices. This can lead to phishi

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 95%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-05-05
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: traccar

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-05 13:16 UTCPublished CVE record published
2026-06-17 10:27 UTCUpdated Record last modified

traccar traccar UPGRADE

Affected: >= 6.11.1 and < 6.13.0

Fixed in: 6.13.0

Safe to downgrade to: a release before 6.11.1

1. Check installed version

apt-cache policy traccar || rpm -q traccar || traccar --version

2. UPGRADE to 6.13.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade traccar

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade traccar

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 6.11.1 (Debian / Ubuntu)

apt-cache madison traccar sudo apt install traccar=<VERSION_BEFORE_6.11.1> sudo apt-mark hold traccar

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list traccar sudo dnf downgrade traccar-<VERSION_BEFORE_6.11.1> sudo dnf versionlock add traccar

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-27694?

traccar: upgrade to 6.13.0. Exact commands for each OS are on this page.

Is CVE-2026-27694 being exploited?

CVE-2026-27694 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-27694 affect?

CVE-2026-27694 affects traccar. Severity is medium (CVSS 5.4). Traccar is an open source GPS tracking system. In org.traccar:traccar versions starting at 6.11.1 before 6.13.0, the email notification templates insert user-controlled device, geofence, and driver names into HTML email output without prope

How urgent is CVE-2026-27694?

Priority 25/100. Public exploit reference

Related CVEs

CVE-2026-44314 MEDIUM 4.3 UPGRADE Traccar is an open source GPS tracking system
CVE-2026-27693 MEDIUM 5.4 UPGRADE Traccar is an open source GPS tracking system
CVE-2026-27644 MEDIUM 6.5 UPGRADE Traccar is an open source GPS tracking system

References

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