CSRF in Traccar
CVE-2026-108738
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.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind/traccar-oidc-client-missing-state-login-csrf (third-party-advisory)
- github.com/traccar/traccar/blob/cfab560c79ee9c9eaa41c79c6df351e820d6284b/src/ma… (technical-description)
- github.com/traccar/traccar/blob/cfab560c79ee9c9eaa41c79c6df351e820d6284b/src/ma… (technical-description)
- github.com/traccar/traccar (product)
- www.vulncheck.com/advisories/traccar-5.7-through-6.16.0-login-csrf-via-openid-c… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-108738?
- CVE-2026-108738 is a medium-severity vulnerability in Traccar, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.2/10. Published 2026-10-11.
- How severe is CVE-2026-108738?
- Medium severity. CVSS v3 base score is 4.2 out of 10.