{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "5.7"
              },
              {
                "last_affected": "6.16.0"
              },
              {
                "fixed": "6.16.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "f982ed08a3d21e8eb6e9bbf4c25698ecbaad5b37"
            },
            {
              "fixed": "cfab560c79ee9c9eaa41c79c6df351e820d6284b"
            }
          ],
          "repo": "https://github.com/traccar/traccar",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-352"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108738.json"
  },
  "details": "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.",
  "id": "CVE-2026-108738",
  "modified": "2026-10-13T02:30:26.627623705Z",
  "published": "2026-10-11T12:19:43.602Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108738.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://hackmd.io/@haind/traccar-oidc-client-missing-state-login-csrf"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-108738"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/traccar-5.7-through-6.16.0-login-csrf-via-openid-connect-callback"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/traccar/traccar"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/traccar/traccar/blob/cfab560c79ee9c9eaa41c79c6df351e820d6284b/src/main/java/org/traccar/api/resource/SessionResource.java#L175-L193"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/traccar/traccar/blob/cfab560c79ee9c9eaa41c79c6df351e820d6284b/src/main/java/org/traccar/database/OpenIdProvider.java#L110-L198"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Traccar 5.7 through 6.16.0 Login CSRF via OpenID Connect Callback"
}