Traccar 5.7/6.16.0 OpenID Connect Callback callback state cross-site request forgery

Summaryinfo

A vulnerability was found in Traccar 5.7/6.16.0. It has been declared as problematic. Affected is an unknown function of the file /api/session/openid/callback of the component OpenID Connect Callback. The manipulation of the argument state results in cross-site request forgery. This vulnerability is identified as CVE-2026-108738. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in Traccar 5.7/6.16.0. Affected is some unknown processing of the file /api/session/openid/callback of the component OpenID Connect Callback. The manipulation of the argument state with an unknown input leads to a cross-site request forgery vulnerability. CWE is classifying the issue as CWE-352. The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. This is going to have an impact on integrity. CVE summarizes:

Traccar 5.7 through 6.16.0 contains a cross-site request forgery vulnerability that allows attackers to log victims into attacker-controlled accounts because the OpenID Connect callback never validates the OAuth state parameter. Attackers can induce a victim's browser to load /api/session/openid/callback with their own authorization code, causing data the victim enters, such as registered devices, to land in the attacker's account.

The advisory is available at hackmd.io. This vulnerability is traded as CVE-2026-108738 since 10/11/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

• Traccar

Version

• 5.7
• 6.16.0

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CPE 2.2info

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